Pollution on Earth

7. Unwanted or harmful sound (5 letters).
8. A molecule consisting of three oxygen atoms, important in the upper atmosphere (5 letters).
11. To convert waste into reusable material (7 letters).
13. Capable of being decomposed by bacteria or other living organisms (13 letters).
14. A heat-resistant fibrous silicate mineral that can be woven into fabrics and is harmful to health (8 letters).
15. Tiny particles or droplets that are mixed in with air and can be harmful when inhaled (10 letters).
16. A poisonous substance produced within living cells or organisms (5 letters).
18. Gas A gas that contributes to the greenhouse effect by absorbing infrared radiation (8 letters).
20. A rapid increase or accumulation in the population of algae in water systems (10 letters).
21. The total amount of greenhouse gases produced to directly and indirectly support human activities (14 letters).
23. A chimney or pipe for discharging smoke from a factory or power station (10 letters).
25. A heavy silvery metal that is liquid at room temperature and can cause serious health issues (7 letters).

1. The process of burning waste materials to reduce their volume and mass (12 letters).
2. The clearing or thinning of forests by humans (13 letters).
3. The process of turning organic waste into soil conditioner (10 letters).
4. Rainfall made sufficiently acidic by atmospheric pollution that it causes environmental harm (8 letters).
5. A site for the disposal of waste materials by burial (8 letters).
6. A heavy metal that is toxic and can cause environmental and health problems (4 letters).
9. The process by which soil and rock are removed from the Earth's surface by wind or water flow (7 letters).
10. Natural fuels such as coal or gas, formed in the geological past from the remains of living organisms (11 letters).
12. The presence of a minor and unwanted constituent in material, physical body, or environment (13 letters).
15. A synthetic material made from various organic polymers that are moldable (7 letters).
17. Water that flows over the ground surface rather than soaking into the ground, often carrying pollutants (6 letters).
19. Substances used for destroying insects or other organisms harmful to cultivated plants or animals (10 letters).
22. A biological community of interacting organisms and their physical environment (9 letters).
24. A type of air pollution that is a mixture of smoke and fog (4 letters).