Question #7f11f

1 Answer
Fleur
Jul 11, 2017

#H_2O# and #CO_2#

Explanation:

Photoautotrophs are organisms that synthesize their own "food" by using light energy from the sun. They include plants, algae, cyanobacteria, etc.

They require water, carbon dioxide, and light energy in order to synthesize glucose and oxygen.

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