CPR, or cardiopulmonary resuscitation, is a first-aid technique to help 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.

Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error? the object is an asteroid, not a dwarf planet.the object is a moon, not a dwarf planet.the object is not a dwarf planet because it travels with other objects.the object is not a dwarf planet because it is round.