| interdependent |
To depend on each other for needs and wants |
| economy |
The way a country uses its natural resources, money, and knowledge to produce goods and services |
| megalopolis |
A group of cities so close together that they seem to form one large city |
| conservation |
The protection and careful use of our planet's natural resources |
| regions |
Large areas of the US with common features |
| climate |
The weather that an area has over a number of years, including its general temperature |
| environment |
The earth's surroundings in which people, plants and animals live |
| nonrenewable |
Word to describe natural resources such as coal, oil and natural gas |
| precipitation |
Moisture that falls to the Earth as rain or snow |
| geography |
The study of the planet Earth and the way people live on it and use it |