What will a cold air mass do when it moves into a warm air mass

a. hit the warm hair mass and then retreat

b. go under the warm air mass

c. hit it directly and does not move up or down

d. go over the warm air mass

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.