Routinely, in nature, during a 24-hour period in nature, what substance do green plants continuously require and use?

a
oxygen
b
both carbon dioxide and nitrogen
c
both carbon dioxide and oxygen
d
carbon dioxide, only

The correct answer is c) both carbon dioxide and oxygen. Green plants undergo photosynthesis, a process that requires carbon dioxide for the production of sugars and oxygen as a byproduct. They use carbon dioxide from the air and oxygen from their surrounding environment to carry out this process.

In nature, during a 24-hour period, green plants continuously require and use carbon dioxide. The correct answer is option D - carbon dioxide, only.