Gene flow describes the A - movement of genes within a population because of interbreeding

B- Exchange of jeans during Recombination

C- movement of jeans from one generation to the next

D- movement of genes from one population to another

Spherical shaped cell might increase the surface area and decrease the volume.

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.