Answer:
C.
Explanation:
When you have a cut on your finger, positive feedback contributes to the rapid formation of a platelet plug in an injured blood vessel. The injured area attracts platelets, and each of these platelets secretes chemicals that attract
more platelets. Thus, many platelets accumulate quickly and together these platelets plug the hole in the injured blood vessel and prevent excessive blood loss.
Answer:
1-it means "with oxygen"its activities that moves muscles and gets you breathing
2-180 over 80 is normal
3-relating to the phase of the heartbeat when the heart muscle contracts and pumps blood from the chambers into the arteries
4-relating to the phase of the heartbeat when the heart muscle relaxes and allows the chambers to fill with blood.
5-overheating you can be short on breath bloody nose and etc
Explanation: