The are a group of fish thought to be ancestral to amphibians. cartilaginous fish crossopterygians ray-finned fish african lungfish

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

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.

Based on her survey, which advertising mediums will work best to publicize leslie's in-store specials?