Nutrients reach the surface of the skin (epidermis) through the process of a. filtration b. diffusing through the tissue fluid from blood vessels in the dermis c. utilizing the products of merocrine glands to nourish the epidermis d. absorbing materials applied to the surface layer of the skin

b

Explanation:

answer; i believe the correct answer is (replication is not conservative);

i'm thinking (a) to keep sand in place; ////////////

explanation: a sand fence or sandbreak, like a snow fence, is used to force windblown, drifting sand to accumulate in a desired place. sand fences are employed to control erosion, sand dune stabilization, keep sand off roadways, and to recruit new material in desert areas.