Across
- 1. layer This layer protects the earth from ultraviolet rays.
- 4. Harmful substances that are released into air,water and soil.
- 6. The study of living things in their natural surroundings.
- 7. The greenhouse gases causes increase in the world's temperature is called
Down
- 2. Natural surroundings in which the living organisms live and survive.
- 3. resources The resources that we get from our environment is called
- 5. This is burnt to generate electricity.
- 8. rain The harmful substances in the air mix with water vapour and form rains called?