Which statement best describes the central nervous system?

a It senses stimuli and carries out a reaction.
b It secretes hormones.
c It is made up of all nerve cells.
d It is made up of the brain and the spinal cord.

i think its A

Explanation:

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a

the answer will be a) proteins i believe