Adaptors are unconscious, and can be signs of many things as they are menial gestures we create in response to certain situations. It's a form of nonverbal communication that doesn't really fall into any one category besides the first. My best guess is A, by this understanding.
Because moving water wears away cliff
Answer:
<h2>Gregor Mendel used "Cross Polination"of parents that have different traits to produce offsprings.</h2>
