Where does most of the energy that drives the water cycle comes from?
a. the sun
b. earth's core
c. earth's oceans
d. the equator?

Why is the future for life on earth bleak?

What would happen to kenya's pyramid if there was a rapid decline in its: a) birth rate b) death rate

(1) which phrase describes an important agricultural change that occurred during the mississippian period? (a) first cultivation of wild grains (b) expansion of marsh elder farming (c) spread of corn agriculture (d) gathering of nuts and berries (2) which group of native americans use northwestern arkansas as it’s traditional hunting grounds? (a) osage (b) quapaw (c) woodland (d) caddo