It is not C
I don't think its A
do you have like a lesson or textbook that can help you?
because information like that is going to be in your textbook...
The answer is population I think
The complexity of the human body
suggests an intelligent design to the honest observer
true
Photosynthesis removes the carbon dioxide and releases the oxygen, but cellular respiration is the opposite because it uses the oxygen in order to release the CO2. So the carbon atoms are released during cellular respiration.
Hope that helps?