| A | B |
|---|
| natural resource | anything from the natural environment that people use to meet their needs |
| renewable resource | a resource that is replaced naturally and quickly |
| nonrenewable resource | metals and other minerals that cannot be replaced once they are used up |
| fossil fuel | nonrenewable mineral resource - coal, oil, natural gas - formed in the earth's crust from plant and animal remains |
| subsistence farming | farming that produces only enough to support a family's needs |
| service industry | business that provides services to people rather than producing goods |
| pollution | putting impure or poisonous substances into land, water, or air |
| pesticide | chemicals used to kill insects and other pests |
| acid rain | precipitation in which water carries large amounts of chemicals, especially sulphuric acid |
| hydroelectric power | electric power generated by falling water |
| solar energy | power produced by the heat of the sun |
