Across
- 3. someone who works to protect animals, plants, and natural resources or to prevent the loss or waste of natural resources
- 4. the existence of many different kinds of plants and animals in an environment
- 5. the general weather conditions usually found in a particular place
- 6. the whole mass of air that surrounds the Earth
- 7. a black or brownish-black hard substance within the earth that is used as a fuel
- 8. a black or brownish-black hard substance within the earth that is used as a fuel
Down
- 1. a substance that can cause cancer
- 2. capable of being slowly destroyed and broken down into very small parts by natural processes, bacteria, etc.
- 3. the protection of animals, plants, and natural resources
- 6. a layer of rock or sand that can absorb and hold water
- 7. a chemical element that forms diamonds and coal and that is found in petroleum and in all living plants and animals
