Stomatas are pores on the plant leaf that control the flow of gases between the environment and the plant cells. this process the cells maintain a stable internal environment. which biology theme does this example represent? interdependence in nature regulation energy transfer

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.