Eutrophication refers to a process of change that takes place in a body of water. Which of the following causes eutrophication? A)CFCs
B)acid rain
C)thermal pollution
D)excessive nutrients

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.

Asolution containing hci would likely have

Why do the circulatory systems of land vertebrates have separate circuits to the lungs and to the rest of the body?