Unit 4

Things in the environment that are useful to humans

Natural resources that can be replaces

Natural resources that will eventually run out

Natural energy sources that will never run out

An area that has certain characteristics that set it apart from other places

The (a)   is broken into the Pacific and Mountain divisions.

The (a)   is home to the source of the Mississippi River and the Great Lakes.

Some people from northern states spend their winters in the (a)   so they can enjoy a warm climate all year long.

The (a)   is the most populated and urban area in the USA.

Alaska and Hawaii are part of the (a)   division.