The main structure of an animal cell are:
-Plasma
-The membrane
-Nucleus and organelles
<span>After a long time, a mature community is established and this community does not change unless it is disturbed.</span>
Thats a hypothesis another word for it is a theory but the scientific term is a hypothesis, hope this helps love
In a tropical rain forest, the layer formed by the leafy tops of tall trees is called the Canopy and the layer of shorter trees and vine is called the Geographic range.