The burning of fossil fuels by cars and factories has most affected the cycle.
a) carbon
b) hydrogen
c) nitrogen
d) water

What came first the elephent or the crocodile

Ecosystems involve living organisms interacting with non-living things in a productive way; how is photosynthesis an example of this? answer, i will give brainiest to first person to get it right.

For each of the following, decide whether the statement describes photosynthesis, cellular respiration, or both. releases energy in the form of atp. stores energy in glucose molecules. performed by producers. performed by consumers.