Across
- 4. The variety of different plants, animals, and other living organisms in an ecosystem
- 7. Describes something that can continue without seriously damaging the environment
- 9. Harmful substances that contaminate air, water, or soil
- 10. Describes a species that is at risk of becoming extinct
Down
- 1. The destruction or removal of large areas of forest
- 2. A community of living organisms interacting with each other and with their physical environment
- 3. Animals and plants living in their natural environment
- 5. The natural home of an animal or plant
- 6. Describes energy that comes from sources that naturally replace themselves
- 8. A long period with little or no rain