Aheat wave that causes an organism to move to a cooler climate is an example of ?

Acommon kind of mechanical weathering is called

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.

Vessels draining the myocardium of the heart, open primarily ,into which chamber?