#. The boundary where unlike air masses meet but do not easily mix is called a

The body uses fight or flight as a way of defending itself from stress. question 2 options: true false

The amount of oxygen that is actually used by the body during the rest or a hand workout is determined by the heart rate, the stroke volume, and the amount of a. blood circulating in the vascular system b. oxygen removed from the vascular system c. oxygen provided to the vascular system d. blood that individual has in the body e. hemoglobin in the red blood cells

What are the two things that all sociologists do in their studies?