1. natural selection acts on existing traits because you can not evolve into something you didn't have
2. original structures evolve to accomplish new function in order to survive
The term used to describe a harmless organism resembling a harmful one is batesian mimicry. Cryptic coloration or camouflage makes prey difficult to spot, while aposematic coloration is a type of coloration exhibited by animals with effective chemical defenses. Mullerian mimicry is a type of mimicry in which two or more unedible species resemble each other.
Answer:
A is pointing to the cell membrane. The cell membrane's main function is to provide protection for the cell as well as allow substances in and out of the cell due to selective permeability.
Explanation:
Some other functions:
-Endocytosis and Exocytosis
-Cell Signaling