Across
- 1. unwanted material; trash
- 4. to get rid of something
- 6. made of a light, strong material that is made by humans and is capable of being molded into a shape
- 7. able to be replaced and not permanently used up
- 9. the result of putting harmful substances into the air, water, or soil
- 11. grown and produced without chemicals or artificial products
Down
- 1. something that has been treated through a special process and then used again or in a new form
- 2. a claylike rock that is the main source of aluminum
- 3. fuels that formed from the remains of things that lived millions of years ago
- 5. capable of being decomposed or broken down by microorganisms, such as bacteria
- 8. poisonous; dangerous to life
- 10. a place where garbage is stored and covered with dirt