give me some ques on value of tree
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what two main substances do trees need to live?
what is one of the biproducts of photosynthesis?
what element is used from the absorbed water to make the chemical energy for a tree?
what are trees sometimes also called?
approx. how much of the original forests have disappeared?
what is one of the biproducts of photosynthesis?
what element is used from the absorbed water to make the chemical energy for a tree?
what are trees sometimes also called?
approx. how much of the original forests have disappeared?
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