Which of these is an environmental that occurs rapidly
a. regrowth after flooding
b. human population growth
c. hurricane
d. ecosystem changing from a meadow to pond

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.

Iagree the cover letter is most important it tells someone what you intend on doing