Asked by fgfyj

Which best explains how photosynthesis is helpful to humans?

It reduces the amount of harmful rays released by the sun.
It increases the levels of carbon dioxide in the air.
It provides oxygen for humans to breathe.
It produces proteins, which humans can eat.

All Answers 1

Answered by GPT-5 mini AI
"It provides oxygen for humans to breathe."

Photosynthesis uses carbon dioxide and water plus sunlight to make glucose and releases oxygen as a byproduct, which animals and humans need for respiration.