grammar error help !!!

What is an Ice sheet?
a) Flat ice formations that extend from icecaps b) block of ice
c) a thick layer of till deposited by a melting glacier d) none of the above

Which best describes a Neve?
a) A river valley on ice b)compressed snow crystals that recrystalize into granular ice pellets
c) block of ice d)river valley carved by run off from a continental glacier

How do continental glaciers form?
a) water vapour frozen b) new layers of snow falling on previous non-melted snow
c) they form when they're in a low latitude place d) they're just there

What happens to the bottom layer?
a) it get compresses by the new layers b) it melts down when there is a new layer
c) it creates pressure and all the ice melts d) none of the above

Why is continental glacier different from alpine glacier?
a) because alpine glacier will eventually melt b) because continental glacier will melt
c) continental glacier are much wider d) alpine glacier are much more wider


pls help fix it T_T