Trace the energy transformation from a radio signal to the music you hear.

it sends waves from sat lights to ur inntina

Explanation:

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.

x would be the most and the least would be y because there are more fruit   and seeds than flock z has insects