Earth Month

2. A huge body of saltwater that covers about 71 percent of Earth's surface
3. To make something smaller or use less of it
6. A synthetic material; one of the main pollution for marine life and ecosystems
9. Natural or artificial substance that improves plant growth and productiveness
11. The long-term warming of the planet's overall temperature
13. Waste material that is no longer needed or wanted
14. The physical world and everything in it; not made by the people

1. To use something again, especially for a different purpose
3. To convert waste into reusable material
4. The planet on which we live
5. A biological community of interacting organisms and their physical environment
7. Tall woody plants with a single main stem or trunk and many branches
8. A living thing that grows in soil and has a stem, leaves, and roots
10. The introduction of harmful materials into the environment
12. Waster material that is discarded improperly