B. The brain reacts to excessive dopamine levels by increasing the number of dopamine receptors.
Answer:
In simple cuboidal epithelium, the nucleus of the box-like cells appears round and is generally located near the center of the cell.
Answer: phytoplankton
Explanation: shrimp and krill are primary consumers. Primary consumers rely on producers for food. Phytoplankton are producers.
Arrector Pili<span> Muscle - This is a tiny muscle that attaches to the base of a hair follicle at one end and to dermal tissue on the other end. In order to generate heat when the body is cold, the </span>arrector pili<span> muscles contract all at once, causing the hair to "stand up straight" on the skin.
Hope this helped, credits go too google.</span>
