Pease ! the cells in your nose that detect smell are a type of? a. chemoreceptor b. propipceptor c. efferent receptor d. mechanorecptor

the answer would be 3

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'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"

d.embryo is the correct one