Across
- 4. The result or effect of a particular action or condition.
- 6. The contamination of the environment with substances that are harmful to life.
- 7. Involves planting trees to replace ones that have been removed.
- 8. The variety of life in a particular place.
- 10. To eat grass or other plants growing in a field.
- 11. The development of land for houses and other buildings near a city.
- 12. The process of green plants using sunlight to make food from carbon dioxide and water.
- 13. The process of restoring land disturbed by mining.
Down
- 1. Chemicals used to kill insects and small animals that eat crops.
- 2. To protect something from being harmed or destroyed.
- 3. The careful use of Earth's materials to reduce damage to the environment.
- 5. Something from Earth that living things use to meet their needs.
- 9. The cutting of large areas of forests for human activities.