What chemical substances needed by body cells that result from the process of digestion is called

Idon’t know the answer and i’ve been stuck on it for a while now skskskskks

What makes a dominant allele different from a recessive allele

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.