A. Crossing over decreases genetic diversity B. During crossing-over, bits and pieces of the homologous chromosomes are exchanged
C. Homologous chromosomes move to opposite ends of dividing cells
D. The DNA of the diploid cell is copied

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.