Question | Answer |
Most of the earth's surface is covered by? | water |
surrounding the earth is a blanket of air called the what? | atmosphere |
the gases of the earth's atmosphere make earth the only planet known to be able to support life | |
animals need to breath this gas from the air | oxygen |
plants use this to make food | carbon dioxide |
any material found on or in earth that is used by people | natural resource |
what are the earth's basic natural resources (3) | air, water, and land |
a solid found in nature that has a definite chemical makeup | mineral |
esamples of minerals are | salt, chalk, metal ores, and gems such as diamonds |
a valuable mineral from earth is | gold |
natural resources called fossil fuels are | oil, natural gas, and coal |
fossil fuels are substances that formed when plants and animals living millions of years ago | decayed |
renewable resources CAN be replaced within a person's lifetime | water, tree, air |
nonrenewable CAN NOT be replaced within a person's lifetime | coal, oil, soil, and natural gases-gasoline |
inexhaustible resources DOES NOT DECREASE or become used up as people use it | example is wind, can drive windmills to produce electricity |
any unwanted or harmful material found in the environment | pollution (litter and dirty water) |
unwanted or harmful material found in the air | air pollution..wind can pick up and carry dust and pollen |