Which of the following provides the best summary of the process of natural selection?

A. Populations become better adapted to their environment.
B. Individuals pass on their best traits to their offspring.
O C. Population sizes increase with every generation.
D. Individuals always change in response to their environment.

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.