Glaciers can only form when
a.
there is an ice age.
b.
there is a u-shaped valley in the mountains.
c.
the amount of snow exceeds the amount of rain.
d.
more snow falls than melts.

The fish shown above is a tarpon. it is a fast-swimming and powerful open-water fish. its closest relatives, oddly, are burrow-dwelling conger eels that stay on the bottom. both eels and tarpon developed from snake-like larvae that float in the plankton during the first stages of life. once they mature, tarpon and eels are not found near one another in the ocean. the tarpon and the eel illustrate all of the following except

Which of the follow describes a disadvantage secondary sources have compared to primary sources?

Why are some places regularly warmer or cooler than others in a given month