Answer: The Answers are, A: happens all the time, D: can be caused by genetic drift, and E: can be caused by natural selection.
2 or more different atoms are combined in definite proportions in any compound.
the picture print is not good enough to be readable please delete the question and post a new question wth a good print
Answer:
The balance of nature is a theory that proposes that ecological systems are usually in a stable equilibrium or homeostasis, which is to say that a small change will be corrected by some negative feedback that will bring the parameter back to its original "point of balance" with the rest of the system
Explanation:
Answer:
both types of cells have a cell membrane
