In the human body keratin is a protein which is essential for healthy hair and nail growth. if a patient went to the doctor concerned with brittle hair and fingernails which essential element would the patient most likely be lacking?

Sulphur

Explanation:Sulphur is the element essential for promoting healthy keratin levels.

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.

i need