How is it possible that some strains of staphylococcus aureus can be harmless, but others can be deadly?

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.

Which is the best example of plant tissue? the answer is d (just took the test)

What are the pros and cons of quadrat sampling?