Across
- 4. rain rain that contains harmful chemicals that collect in the atmosphere when fossil fuels are burned.
- 6. a gas in the atmosphere that stops heat from escaping into space.
- 9. a chemical that's sprayed on crops to stop insects from destroying them.
- 10. animals or plants in danger of becoming extinct or disappearing in the near future.
Down
- 1. the contamination of the environment, esp. by industrial waste products and chemicals like pesticides.
- 2. a fuel like oil or coal formed from very old plant and animal fossils.
- 3. dioxide a gas that's released when carbon is burned (for example coal or oil), or when people or animals breathe out
- 5. global changes in temperature, wind patterns, rainfall, etc. mainly caused by the burning of fossil fuels like coal and oil.
- 7. the complex system of relationships between living things and their environment.
- 8. no longer existing or lost forever (of an animal, bird or plant species).