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Cutting a tree is a physical change. To release the carbon, there has to be a chemical change. Burning or rotting will release the carbon.
Burning wood and coal add carbon dioxide to the atmosphere, where it joins other greenhouse gases to contribute to the greenhouse effect. Burning wood may only release carbon that has been stored for some years, depending on the age of the tree. Burning wood will usually not add to the normal carbon cycle, especially if another tree is growing in its place. Burning coal, however, releases carbon dioxide that has been hidden away underground for millions of years. This extra carbon disrupts the natural carbon cycle and is causing the enhanced, or accelerated greenhouse effect which is causing the present global warming.
Burning fossil fuels (coal, oil and natural gas)Burning trees (half a tree is carbon)Burning any garbage (most things on earth have large amounts of carbon in them)
I read a tree can consume about 2000 pounds of carbon in a lifetime.
well its both because...it's a chemical change because when the tree is burning it's letting oxygen and carbon oxide in the air. It's also a physical change because if that tree is sharing roots with another tree that other tree root will become damaged and will sooner or later will be dry rotted and the tree will fall over(it can also damage the grass around it).
Have Gun - Will Travel - 1957 The Burning Tree 6-22 was released on: USA: 9 February 1963
More carbon dioxide is being produced primarily due to human activities such as burning fossil fuels, deforestation, and industrial processes. These activities release large amounts of carbon dioxide into the atmosphere, contributing to the greenhouse effect and global warming.
A growing maple tree
A growing tree absorbs carbon dioxide (CO2) from the atmosphere and stores the carbon in its roots, trunk, branches and leaves. It usually takes decades, sometimes hundreds of years before it becomes a fully grown tree. By the end of that time about half its weight is carbon. When the tree is burnt it releases all that hundred years of carbon into the atmosphere in a matter of minutes. If we burn trees quicker than new trees grow to replace them (loss of forest land to agriculture, deforestation, etc.) the amount of CO2 will increase in the atmosphere.
Most things are made from carbon. More than half a tree is carbon; more than half of the human body is carbon. The same with trash.Burning, combustion, is a chemical change where one atom of carbon (C) combines with two atoms of oxygen (O2) to make carbon dioxide, (CO2).It should be noted that burning trash does notcontribute to global warming, as the carbon released into the atmosphere was recently removed from the atmosphere when the item was manufactured. So this is part of the natural carbon cycle.The carbon from the burning of fossil fuels (coal, oil and natural gas) on the other hand, has been out of circulation, buried under the earth for 300 million years, so releasing this does contribute to global warming.
it consumes a much greater amount of carbon di oxide during the day
Yes. New substances are formed, mostly carbon dioxide and water, so it's a chemical change.