The leaves is very vital part of the tree because they produce sugars and allow the distribution of water.
Sugar is produced by photosynthesis, which is a process by which carbon dioxide and water are combined with sunlight and the so-called chlorophyll. The sugar then gives energy to the tree.
Water loss or transpiration also takes place in the leaf. Why? Water is drawn up from the roots through the vascular system in order to replace the lost moisture in the tree.
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