A nocturnal animal waking up when the sun goes down is an example of which characteristic of living thing?
A. Respond to stimuli
B. Are made of cells
C. Grow and develop
D. Obtain and use resources for energy

What types of energy transfers and energy transportations are involved in the domino chain reaction?

The nursing instructor has been observing nursing students initiate an iv infusion. which action(s), if made by the nursing student, indicates that further instruction is needed? (select all that apply.) the nursing student:

Veins have a much lower blood pressure than arteries. which of these prevents backflow of blood in veins? a. pressure applied by the heart b. one–way valves in veins c. thin muscular walls of veins