This could either be c or d, both should work
Answer:
the answer is chloroplasts
Explanation:
D.All of these is the answer
Amount of rainfall
I’m not sure if this is right but I think it is because all of the rest are major parts of ecosystems, and although rainfall is too, it’s more of a natural source that happens anywhere whereas the rest of the options may determine the ecosystem
B so happens to be the answer my friends
