Answer:
The difference between the trees and the animals is that they both need each other to survive. The biological community needs samples of the communities, ecosystems, and populations. Also, they need more stuff to combat other things.
Explanation:
Because that way it could be isolated and easier to study.
Prokaryotes is the answer for ur quetsion
The American marten is a long, slender-bodied weasel about the size of a mink with relatively large rounded ears, short limbs, and a bushy tail. American marten have a roughly triangular head and sharp nose. Their long, silky fur ranges in color from pale yellowish buff to tawny brown to almost black.
Darwin's theory. In 1859, Charles Darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. He defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".
