The answer for Part A is: In an action-reaction pair the forces work on different objects.
B is not correct because new molecules are formed so numbers can change. D isn't correct because the color often changes, for example metallic iron and clear oxygen form red rust. The arrangement of the atoms changes, too so a isn't correct. C is cotrect
Carbohydrates are used by the body for energy and structural support in cell walls of plants and exoskeletons of insects and crustaceans.
Answer:
Increase in blood flow; increase in blood pressure
Explanation:
Answer:
ur answer A is correct i think-
Explanation:
