Is a group of closely related organisms that share certain characteristics and can produce new individuals through reproduction

Cells destroy body cells infected by a virus or bacteria. killer t t memory t none of the above

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.

Need with these questions . need the answers in a rush for these questions are the answers i put down are correct or not? ?