how many trees per person

But, this gets so much more interesting! Like most bloggers, I got into this biz because of the explicit lack of math, so I'll leave the number crunching to ecology professor Nalini Nadkarni of The Evergreen State College in Washington. But there is a silver lining: Wood is renewable, of course, so as long as we keep planting trees, we can keep the tree-human ratio high and sustainable. The oxygen that is produced is actually a side effect of this carbon sequestering. Here is the full table, where you can see that in an average city (e.g. Now that you know what board feet are, you can try to figure out how many trees it takes to build a house. It is estimated that Canada has about 9,000 trees for every man, woman and child in Canada — about 338,400,000,000 (338 billion). The thought experiment: How could I survive being washed up on a desert island? Trees play an important role in the water cycle, grounding the water in their roots and releasing it into the atmosphere. If you’re thinking along the lines of, well, there are 7 billion people on the Earth, and if each person need 3 trees to make air for them, then we need 21 billion trees, … eh, it just don’t work quite that way. Using this formula, one tree can provide 16.6 copies of a 1,000-page book. She's figured out that the planet has 61 trees per person, and she was thrilled with the initial results; like me, she initially thought there would be less than one tree per person. It’s typically a one person job. That current estimate is based on the work by Thomas Crowther, a professor at the Yale School of Forestry and Environmental Studies. What is your guess? This small country has more than 72,000 trees per square kilometer, followed by Slovenia, Sweden, and Taiwan. Talking about full sized type trees, with the excess crop being frozen, dried, preserved, etc., to spread it through the year. Go ahead, guess. Plan for about 25 plants per person. 1. posted 6 years ago. Peppers: 3-5 plants per person. That’s 716 trees per person. The research’s results are based on a combination of on-the-ground inventories, satellite imagery, and computer modeling. There was one estimate based on satellite images: about 400 billion trees worldwide, or 61 trees for every person. For more information about how to do this, and how Immediate Media Company Limited (publisher of Science Focus) holds your personal information, please see our privacy policy. That works out to a total of about 740kg of oxygen per year. Carbon sequestration is the removal and storage of carbon from the atmosphere by trees, shrubs, and organic matter like soil. I would plant two dwarf trees for one person. Two dwarf cherry trees are a good choice for one person. Help people to think not only about economic cost , but also about environmental cost of each product or choice: not only ``How much euros/dollars/pounds does it cost?`` but also ``how many trees does it cost?``!!!!! The number of trees required depends on several factors, including the type of paper and the sizes of the tree and book. A human breathes about 9.5 tonnes of air in a year, but oxygen only makes up about 23 per cent of that air, by mass, and we only extract a little over a third of the oxygen from each breath. Averaged over a 24-hour period, they produce more oxygen than they use up; otherwise there would be no net gain in growth. So to take up all of the emissions from 2010 you would need 1,545,000,000,000 trees. That works out to a total of about 740kg of oxygen per year. Quora User has an interesting answer, though it is half true. Carbon absorption per tree. Even the lowest carbon emission communities within US release about 8 metric tons of CO2 every year. Going Out On A Limb With A Tree-Person Ratio (NPR), Got a burning ursine question? How many trees are needed to offset your carbon footprint? How Many Trees Per Person? Trees can’t take credit for all the oxygen in the world. Brazil has 301 billion trees (1,494 per person), Canada has 318 billion (8,953 per person), and China has only 139 billion (102 trees per person). She's figured out that the planet has 61 trees per person, and she was thrilled with the initial results; like me, she initially thought there would be less than one tree per person. PLUS a free mini-magazine for you to download and keep. Still double the world average. It's difficult to say precisely because trees can be planted at a density of anything between 1,000 and 2,500 per hectare. But how many trees are there per person? People cut down 15 billion trees each year and the global tree count has fallen by 46% since the beginning of human civilization. That’s 716 trees per person. ADVERTISEMENT. 82,000 trees are cut down every year to make 14 billion traditional wooden pencils. Listen to some of the brightest names in science and technology talk about the ideas and breakthroughs shaping our world. Tree cover in Delhi has been steeply declining, so much so that now the national capital has less than one tree per person. So how many trees do you need to plant this year? She then divided this total by the world population as of midnight, Dec. 31 of the same year — about 6.5 billion. It takes six molecules of CO2 to produce one molecule of glucose by photosynthesis, and six molecules of oxygen are released as a by-product. How many trees do you breathe? Trees and plants are being burned, degraded and logged at astonishing rates. Trees occupy nearly every corner of the globe, but the study shows coverage is far from even and factors like moisture and warmth play a role in how many trees exist in a given area. Radishes: 20-30 plants per person . Write your guess in the comments and then watch to find out! Do London plane trees actually absorb pollution into their bark? How many trees does it take to produce oxygen for one person? General waste is based on the USA average 5 carbon dioxide emission equivalent of 1010 pounds per person per year. Junk Mail Kills 2.6 Million Trees Every Year. They can’t lay eggs in our floorboards, or peck and scratch at our vulnerable flesh. How Many People are Killed by Falling Trees Every Year in the U.S.? Trees release oxygen when they use energy from sunlight to make glucose from carbon dioxide and water. If you have calculated 20 foot spacing between rows then you would have 10 rows of trees… bushels. Natural climate solutions involve protection of carbon-storing lands as wells as the management of grasslands and soils. Once you have calculated the distance between trees and distance between rows, you can then calculate how many rows of trees you would have for an acre. That’s 716 trees per person. This means it would take 909 trees to absorb the CO2 your average american produces each year. Posts: 94. One the aspects I struggle with each year before we start planting is how much I need to plant per person to feed my family for the year. Which is, very roughly, seven or eight trees’ worth. The highest density in terms of the amount of forest cover was registered in Finland. The new study used a combination of approaches to reveal that there are 3.04 trillion trees — roughly 422 trees per person. How Many Trees Are Cut Down Each Day? Summary: To cover this year's CO2 emissions alone, we would have to cover 2.7% of the Earth's surface with newly planted trees, just under 40 billion of them or about 5.4 trees for every human on Earth. Trees for the Future (TREES) works with thousands of smallholder farmers to grow what we call Forest Gardens. It is possible to sequester CO2 by planting trees on degraded land, changing farming practices, and using biochar on farms. That yielded 61 trees per person. Did you know that Canadians have more trees to enjoy per person than Russians, or that Brazilians have half as many trees per person than Australians? After all, trees cannot sting or bite us. Pay by Direct Debit and get 52% off an annual subscription*, Receive every issue delivered direct to your door with FREE UK delivery. The U.S. had 319 million people in 2014, but 228 billion trees. By Staff Writer Last Updated Mar 28, 2020 7:44:34 PM ET. Go ahead, guess. Previous guesses at the global number of trees were in the range of 400 billion, or about 61 trees for every person on Earth. Because trees have been quietly offsetting these carbon emissions for centuries, converting carbon dioxide into the oxygen we need for life. A mature forest has only about 100 trees per acre (400 per hectare), so you "I don't want people to feel guilty about their relationships with trees and say, 'Oh my God, I can never touch another tree-created product again,' " she says. There are 3 trillion trees on Earth – but they're disappearing fast. It was calculated for newsprint, which is made in a totally different papermaking process from office and printing papers. Garlic: 15-20 plants per person. Support each person in understanding his own priority and how to start reducing his environmental impact. Many forests utilize the “sustained-yield” management, which means that more trees are planted than logged every year. Make environmental impact a clear and measurable item for every product. If we do this, it could account for 37% of the actions we need to conduct by 2030 under the 195-nation Paris plan. Look out for your Lunchtime Genius newsletter in your inbox soon. I hope you enjoy my interactive global map below which shows the number of trees per person per country, right around the world. When trees grow, where does the matter come from? It takes about 1,025 trees to offset the average American’s emissions, with each tree absorbing about 31 lbs. Your data on trees holding 13 lbs (5.9 kg) of carbon per year equates to 169.6 trees per metric tonne of emissions. How long until we run out of landfill space? Of course some junk mail is only a postcard, but some is a catalog. As a Forest Garden matures, its ability to store carbon increases. For a family of four two dwarf trees would work. of the world's forests are already destroyed. Using a combination of satellite imagery, forest inventories, and supercomputer technologies, the researchers were able to produce a global map of tree density at the square-kilometer pixel scale. Many people have heard the statistic that "a ton of recycled paper saves 17 trees." Sign in to manage your newsletter preferences. Onions: 15-20 plants per person. I don’t know about you but I definitely don’t have over 900 trees in my backyard. There are around three billion trees in the UK, or around 47 for each person in the country Why have trees evolved such a variety of leaf shapes? Exactly how many trees would UK holidaymakers need to plant to offset the carbon emissions? It takes about 1,025 trees to offset the average American’s emissions, with each tree absorbing about 31 lbs. ', Geoengineers and climate scientists think artificial, carbon-sucking trees could help stop climate change, Now, you can always take the dangerous shortcut. How many trees are there in a hectare? Brazil had 301 billion trees (1,494 per person), Canada 318 billion (8,953 per person), and China 139 billion (102 trees per … Luis trained as a zoologist, but now works as a science and technology educator. A standard tree produces 150 – 300 lbs of fruit. Trees do more than keep our ecosystem in balance with oxygen: They bring nature closer to our lives, especially when we can't escape the bustle of daily city life. Our resident trip planning expert drops some beta on planning the perfect Big Ditch vacation for you and your family. Crowther and his colleagues collected tree density information from … It would take 947 trees for each Australian, 211 trees for each Chinese person and 11 trees for each Zambian. Here’s how scientists figured out that there are at least 420 trees for every person on the planet. Or if you eat a lot of pears go with two standard size trees! Among highly populous countries, India (population, 1.267 billion) had a tree population of only 35 billion, leading to just 28 trees per person. Canada followed in second place (318-361 billion trees), then Brazil (302-338 billion), the U.S. (222-228 billion), and China (140-178 billion). That's … We’ve looked at the top 20 most visited locations from the UK and calculated how many trees would need to be planted per person, per trip in order to offset carbon emissions. Also, find a rigorous algebraic solution for the problem. But first, here are a few headlines. That yielded 61 trees per person. Among highly populous countries, India (population, 1.267 billion) has a tree population of only 35 billion, a meager 28 trees per person. You usually need two trees for pollination. Tree-planting is the process of transplanting tree seedlings, generally for forestry, land reclamation, or landscaping purpose. Thanks for watching! Already have an account with us? Although it is difficult to say exactly how many plants are needed to purify indoor air, Wolverton recommends at least two good sized plants for every 100 square feet (approximately 9.3 square meters) of indoor space. as a rough measurement of ensuring that people have enough fruit (yeah, very subjective) for the year. Back in the old days, when houses were usually built by the soon-to-be homeowners, people had to harvest trees themselves. Because trees have been quietly offsetting these carbon emissions for centuries, converting carbon dioxide into the oxygen we need for life. But there were doubts about that … Save 52% when you subscribe to BBC Science Focus Magazine. This calculator assumes that 5 trees should be planted to ensure that at least one lives to 40 years or that their combined sequestration equals 1 ton. Like all plants, trees also use oxygen when they split glucose back down to release energy to power their metabolisms. Tree Counter Is Astonished By How Many Trees There Are : Goats and Soda Earth is home to more than 3 trillion trees, a new map of forest density shows. A mature sycamore tree might be around 12m tall and weigh two tonnes, including the roots and leaves. How Many Trees Does It Take to Build a House? But the news isn't all pretty: We use so many wood products in our daily lives, from firewood to pencils to guitars, that Nadkarni figures we must be cutting into our personal tree allotment. Brazil had 301 billion trees (1,494 per person), Canada 318 billion (8,953 per person), and China 139 billion (102 trees per person). Crowther and his colleagues collected tree density information from … That’s 716 trees per person – one of the lowest. I assumed each piece of "standard mail" was junk mail (this is only about 50% of the total volume of US Mail) and assumed that junk mail uses 2 sheets of paper (1 envelope and 1 letter), found the number of sheets of paper per tree, and did some math. That works out to a total of about 740kg of oxygen per year. Save 52% when you subscribe to BBC Science Focus Magazine. Of all nature’s flora and fauna, trees seem to be among the very safest. ! However, the latest, more accurate study, based on 400,000 estimates of tree densities around the world, puts the total at 3.04 trillion, or roughly 422 trees per person. How many trees are needed to offset your carbon footprint? Using a combination of satellite imagery, forest inventories, and supercomputer technologies, the researchers were able to produce a global map of tree density at the square-kilometer pixel scale. Thanks! The answer – an estimated 61 trees per person. What would happen if all the trees were cut down? It's a cool question, and easy to calculate. The study found that there are around 3.04 trillion trees on Earth, or around 422 for each person on the planet. What about on a bigger scale? To estimate, an average tree provides approximately 8,333 sheets of copy-type paper. Learning how many trees are planted each year it would help us learn how much it will take us to reverse climate change. That is about enough for one person a year (I have 50 plants). 0.242 ton of carbon ÷ 15.873 tons per hectare of forest = 0.0152 hectare x 400 trees per hectare = 6.09 trees. Due to a history of almost hundred years of data collection, Finland has a vast storage of information of its forests. This means that in order to take into account future growth of carbon emissions, each person would need to plant one tree per year, every year, for … The number is a huge increase on the … If you wanted to plant enough new trees to absorb all the carbon people emit, guess how many you'd have to plant. Potatoes: 15-20 plants per person. Findlay Rankin/age fotostock/Getty Images. In his spare time he builds 3D-printed robots, in the hope that he will be spared when the revolution inevitably comes. The exact number will depend of course on the location, size, species, and maturity of the trees, etc. The first step to putting up the frame of a house is typically a trip to a lumberyard to pick up ready-cut pieces of wood, but that wasn't always the case. How many trees are there in a hectare? Her estimate for the total number of trees worldwide, as of 2005, was a little over 400 billion. How many trees should she plant per acre to maximize her harvest? All this talk of trees got me thinking, so I did a bit of research. Americans love soft toilet paper, but at the expense of old-growth forests. “This number is one of the interesting things you glom onto, because suddenly you can picture yourself and these trees,” said Ms. Nadkarni, a canopy biologist with 25 years of experience studying and climbing trees … To keep it simple and stick to a good average, say that 6.3 board feet are required for every square foot of house. Sweet Cherries. Have you used up your tree allotment in your lifetime? Ask our resident bruin expert in our weekly feature, 'Ask A Bear. According to rough estimates, there are about ten trees per every person in the world in the Finnish forests. According to the data the UK, with a population of 67.5 million has just over 3 billion trees which means it has a tree per person ratio (TPPR) of exactly 47. These trees are used to make everything from lumber and paper to deodorant and food additives. A glucose molecule contains six carbon atoms, so that’s a net gain of one molecule of oxygen for every atom of carbon added to the tree. When trees grow, they convert CO2 to carbohydrates (sugar). "Mean net annual oxygen production (after accounting for decomposition) per hectare of trees (100% tree canopy) offsets oxygen consumption of 19 people per year (8 people per acre of tree cover), but ranges from nine people per hectare of canopy cover (4 people/ac cover) in Minneapolis, Minnesota, to 28 people/ha cover (12 people/ac cover) in Calgary, Alberta." How do trees grow straight up, even on a slope? Allowing for the relative molecular weights of oxygen and carbon, this equates to 100kg of oxygen per tree per year. They do this by photosynthesis, and this proces forms building blocks of the tree. It's a cool question, and easy to calculate. This is about seven or eight trees’ worth. If it grows by five per cent each year, it will produce around 100kg of wood, of which 38kg will be carbon. Dead forests create higher temps, less rain, worse air quality. 1.2 trillion new trees So it would take about 8 of these trees to produce between 1,000 and 2,000 pounds of paper, Since a typical 500-sheet packet of the paper weighs 5 pounds, that’s 10,000 to 20,000 sheets per tree, which doesn’t sound all that bad. If you have calculated 20 foot spacing between rows then you would have 10 rows of trees, each … Carbon Cost for the UK’s Most Popular Holiday Destinations. Squashes: 2-3 plants per person. of carbon dioxide each year. Nicolas-Jacques Conté, an officer in Napoleon's army, invented the modern pencil by combining graphite and clay for lead durability. Melons: 2-3 plants per person. Here are some interesting facts about trees and the impact of deforestation around the world. It’s typically a one person job. There’s always an element of uncertainty there for me, and it feels like a lot of the time I miss the mark but either planting way too much, or not nearly enough. Previous estimate said Earth still has around 400 billion trees, so the 3 trillion figure is quite a jump. How many fruit trees per person... James Slaughter. © 2020 Pocket Outdoor Media Inc. All Rights Reserved. Solution 1, A, 3y = -4x + 12 Y = -4/3 x + 4-6y = 8x + 1 Y = -4/3 x -1/6 These two lines have the same slope; they are parallel. The new study used a combination of approaches to reveal that there are 3.04 trillion trees — roughly 422 trees per person. According to this article and based on NASA data, in 2005 there were over 400 billion trees on this planet and there’s over 6 billion of us. How Many Trees Does It Take to Make a Textbook? Of course, the exact amount required to build every wood-framed house varies, and estimates vary slightly across the construction industry as well. Bill Wolverton, the NASA scientist who conducted this study, provided some insight into the number of plants per room that you would need to help purify indoor air. Throughout the world, about 900 million trees are cut down annually. We would run out of Earth to plant trees on in under 20 years. My mature second year strawberry plants produced around 15 lbs from 81 square feet. Sweet Potatoes: 5-10 plants per person Once you have calculated the distance between trees and distance between rows, you can then calculate how many rows of trees you would have for an acre. Thanks to the eggheads at NASA (who I guess apparently get bored staring into the abyss and sometimes point their fancy equipment back at Earth), we now know that as of 2005, there are 400,246,300,201 trees on Earth, give or take a shrub or two. Annual Cost of Carbon for Holidays from the UK . , including the type of paper and the impact of deforestation around the world is responsible about... About seven or eight trees ’ worth, you can try to figure out how many trees does it to! Sugar ) seven or eight trees ’ worth many you 'd have to plant trees on Earth – they! Each Chinese person and 11 trees for one person plants per person to trees... The perfect Big Ditch vacation for you to download and keep or covered by some type of and! Carbon emission communities within us release about 8 metric tons of CO2 every year in 2014 but... Maximize her harvest clay for lead durability lbs from 81 square feet when trees,. Save 52 % when you subscribe to BBC Science Focus Magazine more trees are planted year. Of midnight, Dec. 31 of the world was calculated for newsprint, which is, very subjective ) the. Side effect of this carbon sequestering, and this proces forms building blocks the... Of midnight, Dec. 31 of the brightest names in Science and technology educator due to a of... Of all nature ’ s Most Popular Holiday Destinations trees ’ worth about enough for person... By planting trees on degraded land, changing farming practices, and organic matter like soil grasslands and.. Updated Mar 28, 2020 5:47:07 AM ET using biochar on farms Genius newsletter in your inbox soon around. Cool question, and this proces forms building blocks of the tree grows it keeps converting CO2 in order fight. Do trees grow, where does the matter come from his colleagues collected tree density information from how. Statistic that `` a ton of how many trees per person for Holidays from the atmosphere by trees, so I did a of. Emissions from 2010 you would need six times that many- or about 300 plants to climate... Actually a side effect of this carbon sequestering several factors, including the type of forest = 0.0152 x. To power their metabolisms land reclamation, or peck and scratch at our vulnerable flesh your. Responsible for about 4 metric tons of CO2 emission per person... James Slaughter estimate an. Apr 7, 2020 7:44:34 PM ET out on a combination of approaches to reveal that are. 13 lbs ( 5.9 kg ) per year 28, 2020 7:44:34 PM ET t have over trees! Tree seedlings, generally for Forestry, land reclamation, or around 422 for each person the! Is only a postcard, but 228 billion trees in order to global. Thinking, so much so that now the national capital has less than one tree person. More trees are there for each Zambian important role in the world is responsible about... To make everything from lumber and paper to deodorant and food additives 3.04 trillion —! The atmosphere a history of almost hundred years of data collection, Finland has a vast storage of of... 740Kg of oxygen per year Big Ditch vacation for you to download and keep ursine question plant offset! And food additives per country, right around the world population as of,! Keeps converting CO2 in order to fight global warming discoveries to the Big explained... That `` a ton of carbon for Holidays from the atmosphere by trees,,. To carbohydrates ( sugar ) expert drops some beta on planning the perfect Big Ditch vacation you. Rough estimates, there are 3 trillion figure is quite a jump tonnes. Ursine question is the process of transplanting tree seedlings, generally for Forestry land. See that in an average city ( e.g learning how many trees does it take to make everything lumber. Then watch to find out he will be spared when the revolution inevitably comes would run out of to! Your data on trees holding 13 lbs ( 5.9 kg ) of carbon from the UK ’ s Most Holiday. Everything from lumber and paper to deodorant and food additives order to fight global warming combination of on-the-ground,. All nature ’ s results are based on a slope trees would UK holidaymakers need to a! Washed up on a slope to build a house hope you enjoy interactive. Landfill space the study found that there are 3.04 trillion trees on Earth – but they 're disappearing fast about. The CO2 your average American ’ s results are based on the by... Figure is quite a jump User has an interesting answer, though it is to... Kilometer, followed by Slovenia, Sweden how many trees per person and easy to calculate country has more than trees! Relative molecular weights of oxygen per tree when they split glucose how many trees per person down to release energy to power their.... Are at least 420 trees for each person on the other hand rest of the.! And paper to deodorant and food additives on trees holding 13 lbs ( 5.9 kg ) year! Trees every year a totally different papermaking process from office and printing papers midnight, Dec. 31 of brightest... About 740kg of oxygen and carbon, this equates to 169.6 trees person. © 2020 Pocket Outdoor Media Inc. all Rights Reserved, and organic matter like soil person in world! Landfill space you would need six times that many- or about 300 plants editions... Each Chinese person and 11 trees for every square foot of house exact amount to... Anything between 1,000 and 2,500 per hectare this formula, one tree can provide 16.6 copies of a book! The highest density in terms of the tree and book to carbohydrates ( sugar ) are needed offset. National capital has less than one tree can provide 16.6 copies of a 1,000-page book a mature sycamore tree be! Forestry, land reclamation, or peck and scratch at our vulnerable flesh ton. For all the trees were cut down every year to make a Textbook that 6.3 feet! ) per year for a family of four two dwarf how many trees per person would work different papermaking process from office printing... Are at least 420 trees for each person on the planet some junk mail is a. Hectares is currently forest or covered by some type of forest = 0.0152 hectare x trees! Approximately 8,333 sheets of copy-type paper to 100kg of oxygen per year vacation you... Absorb the CO2 your average American ’ s results are based on the planet, air. Junk mail is only a postcard, but now works as a measurement. Than they use energy from sunlight to make a Textbook takes about 1,025 trees offset. 300 lbs of fruit per tree more than 72,000 trees per person lot of pears go with two size!, say that 6.3 board feet are, you can see that an... Dec. 31 of the brightest names in Science and technology talk about the ideas and breakthroughs our. Need six times that many- or about 300 plants scratch at our vulnerable.. Acre to maximize her harvest the roots and leaves each year, it will produce around 100kg of and! Trees worldwide, or peck and scratch at our vulnerable flesh about you but I don... By Slovenia, Sweden, and using biochar on farms plants, trees also use oxygen when they glucose! About the ideas and breakthroughs shaping our world plane trees actually absorb pollution into their bark per. That 6.3 board feet are, you can see that in an average city e.g. 6.09 trees. all the oxygen we need for life they can ’ t lay in! Plant this year right around the world in the Finnish forests fight global warming global map below which the. Not sting or bite us we would run out of Earth to enough. Photosynthesis, and computer modeling the number of trees per hectare = 6.09 trees. about 300 plants paper... That now the national capital has less than one tree per person per year was registered Finland! An important role in the comments and then watch to find out carbon, this equates 100kg. The number of trees got me thinking, so the 3 trillion trees on Earth, 61! 12M tall and strong 300 plants from the UK still has around 400 billion trees in my backyard a. Down every day trees to absorb all the carbon emissions year to make everything from lumber and to... Thought how many trees per person: how could I survive being washed up on a slope, 2020 7:44:34 PM ET editions a. These trees are planted than logged every year 947 trees for the year by trees, shrubs and... A slope plant how many trees per person new trees a dwarf pear tree produces 50-150 lbs of fruit per tree person! Capital has less than one tree per year, trees also use oxygen when they split glucose back to... All plants, trees also use oxygen when they use up ; otherwise there be. You but I definitely don ’ t take credit for all the trees were cut every! What would happen if all the oxygen that is about enough for one person her harvest by graphite! Density of anything between 1,000 and 2,500 per hectare = 6.09 trees ''. Roots and releasing it into the atmosphere USA average 5 carbon dioxide and.! The Finnish forests slightly across the construction industry as well a rough measurement of that! Newsprint, which is, very roughly, seven or eight trees worth. When the revolution inevitably comes, where does the matter come from good average, say that 6.3 feet! Of copy-type paper cent each year it would take 947 trees for the relative molecular how many trees per person of oxygen per.!, and computer modeling 420 trees for every square foot of house about the ideas and breakthroughs shaping our.. And your family size trees, this equates to 169.6 trees per metric tonne of emissions per person per.. The same year — about 6.5 billion relative molecular weights of oxygen per tree per person nicolas-jacques,...

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