During the early earth, when photosynthesis has not yet evolved, there were only negligible amounts of free oxygen in the atmosphere. It was said that the Earth's atmosphere had no free oxygen then. This is about 3.5 billion years ago.
I think the one that can impact the climate of an area based on its geographical relief would be : B. Elevation
Mountain exist in a higher elevation lands and ocean exist on the lower elevation. The areas in higher elevation tend to have lower temperature compared to those in lower elevation
hope this helps
Answer:
they both contain phosphorus, but only the click acids contain hydrogen. They both contain carbon, hydrogen, and oxygen in a 1:2:1 ratio