Trees, Air, and Water
When I ask kids why trees are important their number one answer is that they produce oxygen. Plant leaves are solar collectors that take sun energy to produce food through the miracle of photosynthesis, a complex chemical process where carbon dioxide and water are converted to a glucose sugar. This sugar is used for food energy or converted to a starch called cellulose for building the plant body (stem, limbs, etc.). In trees we call this wood, something we use a lot of.
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