Question

why do plants need to obtain carbon atoms?
A.They use carbon to breathe.
B.Carbon is their food.
C.Plants use carbon to build glucose during photosynthesis.
D.Plants don't need carbon.

Answer 1

The Answer Is C: Plants Use Carbon To Build Glucose During Photosynthesis. Once They Have Glucose They Can Reproduce And Stay Alive.
    ~Spades

Answer 2

Either A or C, I'd go with C though.

Plants do use carbon dioxide for glucose molecules, but then again they do get carbon dioxide from the air too.