Answer: a tiny muscle connected to each hair follicle and the skin. When it contracts it causes the hair to stand erect, and a "goosebump" forms on the skin.
The answer is b, for he is comparing the two rocks to find an age relative to the other
The answere is D. Shallow ground water because it is evaporated quickly
The definition is the study of life
An atom that gains a negative electron, it becomes a negative ion. If it loses an electron it becomes a positive ion. Some atoms lose electrons and become positive ions. Others gain electrons and become negative ions.