What is the blood component that is not a true cell, but is actually a fragment of a megakaryocyte

According to positive psychologists, an individual’s subjective well-being consists of one’s and a. overall level of happiness . . life satisfaction b. goal accomplishments . . money earned c. idea of self-importance . . social acceptance d. level of self-esteem . . pride sorry am i just not getting it or is this worded confusingly xd

Which describes the effect of prolonged stress on blood pressure? it causes blood pressure to decrease. it has little or no effect on blood pressure. it causes the heart to pump with more force. it causes blood pressure to increase.

The only part of the body that should touch the ball when setting in volleyball