In outer space, distances between objects such as galaxies can be so vast that a new unit is used to measure them. This unit uses the distance cover by The fastest moving thing in the universe in a year. This is called a(n)

A) light year
B) Atomic year
C) galactic unit
D) Astronomical unit

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.