Across
- 2. economic and military aid to another country
- 3. a slow increase in the Earth’s temperature due to the increasing amount of carbon dioxide in the atmosphere
- 7. rain whose high levels of chemical can damage the earth
- 9. a resource that cycles through natural processes
- 10. any one of several nonrenewable resources
- 11. a natural resource that the environment continues to supply
Down
- 1. a resource or material that is in its natural form
- 4. a resource that cannot be replaced
- 5. a material that can be found on earth
- 6. any useful material found in the environment
- 8. a community of living things and their environment