Trace minerals, such as iron and zinc, are necessary in small amounts, approximately milligrams daily.
a. 5000 mg
b. 100 mg
c. 50 mg
d. < 1 mg

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.