| A | B |
|---|
| acid rain | rain with large amounts of chemicals. |
| atmosphere | the air surrounding the Earth |
| compost | mixture of rotting substances |
| conservation | prevent loss |
| ecosystem | system of interconnected living things |
| environment | living animals and plants around us |
| erosion | process of the earth’s surface wearing away |
| extinct | died out |
| habitat | natural environment of an animal or person |
| hazardous | risky or dangerous |
| industry | general trade or manufacturing |
| insulation | material that keeps things from leaking air or liquid. |
| landfill | area of land where garbage is dumped |
| litter | garbage tossed on the ground |
| nonrenewable | cannot be made new or used again |
| pond | body of water that is smaller than a lake |
| renewable | can be made new or used again |
| toxic | poisonous |
| watershed | area drained by a river |
