Does an asteroid need to hit the earth to do damage? why or why not?

No because heat from the exploding asteroid in the atmosphere can set fires and then the shockwaves can knock down trees for hundreds of square miles.

Hope this helps!

A) 4 amusingb)alpha particle is a helium nucleus. it contains 2 protons and 2 neutrons.c)alpha particle has charge of +2.

D. china is one of the most active places, which could quite possibly mean more agriculture will happen.. and more war machi-    best of luck comrade.