B) Ecosystem - which includes the living communities and nonliving factors in an environment
Answer:
Weathering look at the text book mate
Answer:
C
Explanation:
Membranes will allow and inhibit certain ions/molecules. I don't believe it can distinguish whether the molecules are harmful or beneficial!
Pumps blood to the parts of the body and also it's-self
Answer:
when organisms produce more off spring than can survive is called overproduction
