On a cold winter morning, a person waiting for the bus starts shivering. the muscles used in shivering produce extra heat that warm the body.

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.

The largest unit within which gene flow can readily occur is a

How does a catalyst influence a chemical reaction?