Question

The carbon that plants need for photosynthesis comes from... carbon atoms from the breakdown of food. carbon dioxide gas in the atmosphere.

Answer 1

The answer is Carbon Dioxide Gas in the atmosphere. Study Island's explanation is," In photosynthesis reactions, carbon dioxide from the atmosphere is the source of carbon. The carbon from the carbon dioxide becomes part of the glucose molecules produced by the reaction."

Answer 2

The carbon that plants need for photosynthesis comes from carbon dioxide gas in the atmosphere.