Question 17 of 34
1 point
which of the following best describes gravity?

answer; i believe the correct answer is (a)0

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.

the contamination

we are putting to many trash.

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added