The fossil record shows that the first eukaryotes may have appeared on Earth (1 point) A. more than 4 billion years ago. B. more than 1 billion years ago. C. about 500 million years ago. D. about 100 million years ago.

Generally travels west to east but often shifts to north and south

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.

Idon’t understand do it say more wym