Organization in which different cells are specialized for different functions, but each cell works alone, is characteristics of
a. cell-level organization
b. tissue-level organization
c. organ-level organization
d. organ system-level organization

It feels feed the echo system

Giga is the second highest prefix on the normal scale, the first is terra.

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.