The lowland river system.
Answer:
An extremely important byproduct of photosynthesis is oxygen, on which most organisms depend.
Explanation:
Photosynthesis occurs in green plants, seaweeds, algae, and certain bacteria. These organisms are veritable sugar factories, producing millions of new glucose molecules per second.
Its when they turn time back. Early sunset, early sunrise.
For the answer, the question above, the similarities of both mountains and plains is that it can support any life forms like trees and animals Both types of land have a source of water which is essential for living things. For water comes from mountains and pours down to the plains.
For mountain is once a plain.