What would happen if earth had no atmosphere? a. the days would be hot and the nights would be cold. b. the days would be cold and the nights would be hot. c. earth would not have days. d. earth would not have nights.

The terrestrial planets are characterized by having a a.) silicate core b.) iron-rich silicate core c.) iron-rich metallic core d.) none of these

Give an example of a trait that is controlled by more than one gene.

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.