It depends on the mass of the moving object versus the mass of the stationary object. if the mass of the moving object is larger the stationary object will get sent into motion. if the mass of the stationary object is larger than the moving object, the stationary object will stay stationary and cause the moving object to do the same. if the two objects have the same mass, they will likely move together upon impact and then eventually come to rest.
It depends when you look at a pichture it could possibly help.
It is subduction;) good luck on the others my man
If you mean climate change. Then scientists can study it by seeing where places and things are eroded.
