When Does a Tree Stop Growing?
When Does a Tree Stop Growing? A tree never permanently stops growing as long as it lives. But in most countries each year’s growth is ended during the cold and...
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When Does a Tree Have to Be Pruned?
When Does a Tree Have to Be Pruned? Trees have to be pruned to protect their health, improve their appearance or remove danger to people or property. Sometimes it is...
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Why Do Beavers Build Dam?
Why Do Beavers Build Dam? The beavers of North America build a dam to create an artificial lake in which to construct an island home or lodge. They are the...
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Why Does Wood Have a Grain?
Why Does Wood Have a Grain? The grain in a piece of wood is the pattern produced by the annual bands or rings which grow in the trunk of the tree during its lifetime....
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Who First Invented Paper?
Who First Invented Paper? The word “paper” is etymologically derived from papyros, Ancient Greek for the Cyperus papyrus plant. Papyrus is a thick,...
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