Environment

4. the process of converting waste materials and transforming them into new, reusable products
6. The layer of gases that surround Earth
7. a group of animals or plants having no living member
9. a gradual increase in the overall temperature of the earth’s temperature because of the greenhouse gases
11. a natural process of recycling dry leaves and food waste produced at home into a rich fertiliser for plants
12. rain mixed with sulphuric, nitric and other acids formed by gases released into the atmosphere when fossil fuels are burned

1. contamination of the air, water, or soil with substances that can cause harm to human health or the environment
2. purposeful clearing or destruction of forests to make land available for other purposes
3. the weather conditions found in a particular place
5. the release or discharge into the air of pollutant substances such as gas or smoke
8. farming without synthetic chemicals
10. fuel fuels such as oil, coal and natural gas originating from plants or animals that existed in the past