| A | B |
|---|
| renewable resource | a resource that can be replaced within a reasonably short time |
| nonrenewable resource | a resource that cannot be replaced |
| ore | a rock that contains enough of a mineral to be of value |
| fossil fuels | fuels such as coal, natural gas, and oil that formed underground millions of years ago from decaying organic matter |
| vent | an opening on the ocean floor |
| solar energy | radiant energy that comes from the sun |
| stewardship | the taking care of Earth's resources to ensure their quality and quantity for future generations |
| pollutant | harmful substance in the environment |
| conservation | careful use of resources so they will last longer |
| alternative energy source | source of energy other than fossil fuels |
| reservoir | artificial lake used to collect and store water |
