Which of the following is an example of a positive feedback mechanism?
A. During childbirth, the baby's head pushing on the cervix
encourages uterine contractions.
O B. The kidneys retain more water if the organism's water level is
low.
O C. Insulin causes cells to absorb glucose.
O D. Body temperature is increased if skeletal muscles move
quickly and cause a person to shiver.

Cpr, or cardiopulmonary resuscitation, is a first-aid technique to save lives. it involves compressions of the patient's chest cavity. which description is the best description of the functions of chest compressions in cpr? chest compressions are done to pump the heart. chest compressions are done to strengthen the rib bones. chest compressions increase carbon dioxide inhalation. chest compressions allow the patient's muscles to wake up.

Aplant with dark red flowers is crossed with a plant with white flowers. all of the offspring have dark red flowers with white spots. the alleles got flower color in this plant are both dominant both recessive codominant incompletely dominant

Which of these definitions have been paired with the correct type of cell?