Answer:
b. a person has an emotional need for a drug
The answer is; A, B, D
Celular respiration break down carbon-based sources of energy and harness the energy is chemical bonds through ATPs, the energy currency of cells. Some ATP is spent in initiating the biochemical reactions, however, there is a net positive gain in the produced ATPs at the end of the reactions.
The cytoskeleton of a cell allows the cell to be flexible. Our human skeletons allow <em>us </em>to be flexible.
Centimeter because it is the only metric measurement
Answer:
Since they need to float, leaves on the surface of plants are flat. 6. The presence of air sacs enables them to float. Their roots are smaller so water can spread freely and directly into the leaves
