Water and carbon dioxide are both what level ?

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

Which blood cell spend most of their time in the lymphatic system?