If you are in a somewhat stressful situation, and you experience increases in salivation, constriction of the lungs, contraction of the bladder, and an activation of the digestive tract, you know that your nervous system is primarily responsible for these operations.

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000

What is a population? a. all the members of the same species living in the same ecosystem at the same time b. the number of a species living in the same ecosystem over a period of time c. the total number of organisms living in an ecosystem at a point in time d. all the members of a food web in the same ecosystem

The word belongs in a different group than all of the other words in the list.