An aquarium for tropical fish must maintain a warm temperature. how would a decrease in temperature affect the fish in the aquarium? a. the number of fish would decrease. b. the variety of fish would decrease. c. the number of fish would increase. d. the variety of fish would increase.

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.