The part of the earth wherethe worlds population lives A)core

B)hydrosphere

C)mantle

D)crust

Explore the ways that boundaries influence identity, interaction and exchange. things to consider: what is the race/ethnicity. how easy is it to interact/trade with others.

Lines of longitude are like stripes from the top of the globe down to the bottom virtually slicing the earth like an orange

Which topic would a meteorologist most likely research? -meteors in space -marine ecosystems -atmospheric conditions -the runoff of stream systems