What does biodiversity indicate about an ecosystem? F. The amount of humans near the ecosystem
G. The overall size of the ecosystem
H. The ability of the ecosystem to survive change
J. The identity of the organisms that began ecological succession in the ecosystem

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.