Preserving Resources
a natural resource that can be replaced
Renewable Resource
a natural material that is used faster than it can be replaced
Nonrenewable Resource
water that is not salty, like water found in streams and lakes
Freshwater
to put harmful materials into the air, water, or soil
Pollute
water that is not fresh; this covers about 70 percent of the Earth’s surface
Salt Water
an area that drains into a common body of water like a river, lake, or ocean
Watershed
to save or to keep from being destroyed
Preserve
to create new materials from used products
Recycle
nonrenewable resources that are burned to create energy, such as coal, oil, and natural gas which are formed underground from remains of living thingsnatural gas
Fossil Fuels