Environment

7. Able to break down naturally and harmlessly by bacteria or other organisms
9. The release of gases or substances into the air, often from vehicles or factories
11. The unnecessary or careless use or loss of resources
13. A sudden shaking of the ground caused by movements in the Earth's crust
16. It`s a thin layer of gases that surrounds the earth
17. No longer existing, as a species that has died out completely
18. The variety of life forms in a habitat, ecosystem, or the entire planet

1. A large, uncontrolled fire that spreads quickly in natural areas like forests
2. Created or caused by humans, not occurring naturally
3. The upper layer of earth where plants grow, made of organic matter and minerals
4. A long period of little or no rain, causing water shortages
5. To process used materials so they can be reused instead of thrown away
6. The long-term pattern of weather in a specific region or the world
8. The process of gathering crops or plants that are ready to be collected
10. The clearing or cutting down of forests, often for farming or development
12. Rainfall made acidic by air pollution, harming plants, water, and buildings
14. Energy sent out as waves or particles, such as from the sun or radioactive materials
15. To make something impure or harmful by adding unwanted substances