Review Unit 1 Lesson 1

a treeless plain

• prairie

• tundra

• megalopolis

• canyon

flat, rolling land covered with grass

• prairie

• tundra

• megalopolis

• canyon

a deep valley with steep sides

• prairie

• tundra

• megalopolis

• canyon

an imaginary line in the Rocky Mountains

• prairie

• Continental Divide

• megalopolis

• canyon

a group of cities that have grown close together and seem to have formed a city

• prairie

• Continental Divide

• megalopolis

• canyon

The EASTERN coast of the United States and Canada faces the __________.

• Atlantic Ocean

• Pacific Ocean

• Gulf of Mexico

• Arctic Ocean

The WESTERN coast of the United States and Canada faces the ___________.

• Atlantic Ocean

• Pacific Ocean

• Gulf of Mexico

• Arctic Ocean

The Central Plains and the Great Plains are suitable for the _____________ industry.

• coal mining

• forestry

• exporting and importing goods

• farming

Coal mining helped develop the region of _____________

• Appalachia

• tundra

• plains

• megalopolis

The Appalachian Mountains are the ____________ mountain range in North America.

• youngest

• oldest