Grassland ecosystems receive very little precipitation. the predominant plants are grasses, and drought and wildfire are common. temperatures in grasslands are warm in the summer and cold in the winter. which of the following describes a biotic component of a grassland ecosystem? a. grasses are common. b. temperatures are warm in the summer. c. there is little precipitation. d. wildfires are common. o_o

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.