I NEED HELP ASAP 1. Dylan puts two magnetic toy trains very close to each other on a track. What will happen next, and why?

A. The trains will not move because the magnets are not touching

B. The trains will move closer to each other because the magnetic force will pull the trains together

C. The trains will move away from each other because the magnetic force will push the trains apart.

D. The trains will move away from each other because the magnets are not touching.

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b

Explanation:

magnet pull toward each other they can't go far.

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.

all matter is made up of atoms

in any element all atoms are the same

elements in a compound are always in a constant ratio: apex