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Answer:
1. Health Hazard
2. Fossil Fuels
3. Unleaded Petrol
4. Ozone Layer
5. Acid Rain
6. Ecological Waste
7. Green House Effect
8. Pressure group
9. Sea Levels
10. Chemical Balance
11. Sewage disposal
12. Bottle Bank
Explanation:
The above have been regrouped into their correct usage:
1. Health Hazard: The chemical, physical, and biological factors that can pose health risks in our environments.
2. Fossil Fuels: Hydrocarbons formed from the remnants of dead plants and animals.
3. Unleaded Petrol: Gasoline that is not treated with the compound lead.
4. Ozone Layer: The thin part of the earth's atmosphere where harmful ultraviolet rays are absorbed.
5. Acid Rain: A form of rain with high levels of hydrogen ions.
6. Ecological Waste: Waste found in the environment.
7. Green House Effect: A natural process caused by man's activities that warms the atmosphere
8. Pressure group: A group that tries to influence the opinions of the public.
9. Sea Levels: The level of the sea surface.
10. Chemical Balance: An instrument used to weigh very small amounts of a substance.
11. Sewage disposal: The removal of waste balance.
12. Bottle Bank: A place where glass bottles are kept before recycling.