Answer:
D. cell is the smallest part of an organism.
as cell is basic functional and structure of life.
Like oil and gas an sometimes the sun
Answer:
physical process of atoms or molecules moving apart within a gas or liquid.
Explanation:
Answer:
There is a higher oxygen content in the air of the lungs than that of oxygen-depleted blood and a lower carbon dioxide concentration. This gradient of concentration causes gas exchange during respiration.
Explanation:
Answer:
fat
Explanation:
only plants use starch as a way if storage of energy. Humans, for example, use fat as a way to store energy
