| A | B |
|---|
| federal government | the government with authority over the entire United States |
| ordinance | a law or regulation |
| hazardous waste | something thrown away that is harmful to the environment |
| landfill | a place where trash is buried. |
| groundwater | an underground source of water, such as a spring, well, pond, or aquifer |
| aquifer | an underground layer of rock or earth that holds water. |
| recycling | reusing solid and non-solid waste for the same or new purposes. |
| composting | producing rich organic matter by letting food waste and plants decay |
| Constitution | the plan for the United States government, proposed in 1787. |
