Part 1: what are the two groups of planets based on composition? part 2: describe the composition of each group.

Which statement about glaciers is true? a. glaciers can only be found high up in mountains. b. glaciers have snow all year round, except during july. c. there are two types of glaciers: alpine and continental. d. glaciers can only be found near earth's north and south poles.

Can someone me with this plz? ! i'm putting 20 points on it!

Fertility and mortality rates are higher in more developed nations.