Environmental issues

5. The release of gases, particulate matter, or other substances into the atmosphere, often caused by human activity.
9. The ability to maintain or preserve natural resources and ecosystems for future generations.
12. The variety of life on Earth, including plants, animals, and microorganisms.
14. The total amount of greenhouse gas emissions caused by an individual, organization or product.
15. An increase in the Earth's temperature, primarily caused by human activity.
18. Energy that is generated from renewable resources such as wind, solar, and hydro power, that can be replenished naturally.
19. The protection and management of natural resources and ecosystems to prevent their depletion or degradation.
20. The protection of wild animals and their habitats from human activities that threaten their survival.

1. A social and political movement that advocates for the protection of the environment and the promotion of sustainable practices.
2. A lack of sufficient clean water resources to meet the needs of a population.
3. The loss of natural habitats due to human activity such as deforestation, mining, and urbanization.
4. The process of converting waste materials into new products to reduce the amount of waste sent to landfills and incinerators.
6. The presence of harmful substances in the environment, caused by human activities such as burning fossil fuels and industrial processes.
7. A long-term change in the Earth's climate, usually resulting from human activities such as burning fossil fuels and deforestation.
8. Non-renewable energy sources such as coal, oil, and natural gas, formed from the remains of ancient organisms.
10. Products or practices that are designed to have minimal negative impact on the environment.
11. The clearing of forests for agricultural or commercial purposes.
13. A layer of gas in the Earth's atmosphere that absorbs most of the sun's ultraviolet radiation, protecting the planet from harmful radiation.
16. Gases that trap heat in the Earth's atmosphere, such as carbon dioxide, methane, and water vapor.
17. The deterioration of the quality of land, usually caused by human activities such as deforestation and overgrazing.