English

3. - Contamination of the natural environment causing adverse effects.
5. - A large natural or artificial lake used to store water.
6. - Type of energy source that can be replenished naturally.
7. - Pollutants released into the air, often from vehicles and industry.
14. - Process plants use to convert sunlight into energy.
15. - A community of organisms interacting with their physical environment.
17. - The variety of life in a particular habitat or ecosystem.
18. - Device that converts fluid flow into mechanical energy, often in power plants.
19. - Type of power plant that uses flowing water to generate electricity.
20. - Organic material used as a renewable energy source.

1. - Element involved in major environmental cycles, essential for life.
2. - The practice of maintaining resources for future generations.
4. - Type of gases that trap heat in the Earth’s atmosphere, leading to warming.
8. - The removal of trees on a large scale, impacting ecosystems.
9. - Protecting and preserving natural resources and the environment.
10. - Fuels such as coal, oil, and gas derived from ancient organic matter.
11. - Type of power plant that uses atomic reactions to produce energy.
12. - Process of converting waste materials into new, reusable products.
13. - Energy source that uses heat from within the Earth.
16. - A process that repeats over time, like the water or carbon ________.