Why is photosynthesis necessary for life on planet earth

Photosynthesis is important to living organisms because it is the number one source of oxygen in the atmosphere. ... Green plants and trees use photosynthesis to make food from sunlight, carbon dioxide and water in the atmosphere: It is their primary source of energy. Photosynthesis transforms sunlight, carbon dioxide, and water into chemical energy that plants use. This process also releases oxygen back into the atmosphere. Animals use the chemical energy that the plants make in photosynthesis to get their energy.

Explanation:

try using substitution:

x + y - 6 = x - y. (i'm not giving you the exact answer). since 0 = x - y, then sub 0 in the equation with x - y. combine your like terms, and then use inverse operations, and you'll have your answer.

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carbon

explanation: