Answer:I believe the answer is A
Explanation:
B and C have nothing to do with how the sun helps or is a necessity. D only talks about the life span of the sun not how it is necessary for the earth. A is the only answer that makes sense because it gives examples on how the sun helps the earth as well as human kind.
Idk honestly that’s some bs I don’t even know what physical means
Pioneer species are found in area's undergoing secondary succession. For example ecosystems being established by: reducing a fire, deforestation; which quickly colonize open spaces supported by vegetation.
Answer:
A. The Cell Wall
Explanation:
The cell wall holds and supports the shape of the cell.
A savanna is a type of biom and there are different types of biomes one different type is the grasslands, or the prairie
