Across
- 3. Chemicals used to kill unwanted inscects
- 4. A nucler accident may cause ... of the surrounding area
- 6. The greenhouse ...
- 7. The opposite of synthetic
- 9. A natural or chemical material used by farmers to help grow crops
- 13. The different types of synthetic material which can be moulded and shaped to make many products
- 14. Plants ... watrer through their roots and sunlight through their leaves
- 16. The release of a gas
- 18. The kind of industry which produces medicines
- 19. The gas we breathe out is ...
Down
- 1. Mixing chemicals may cause a chemical ...
- 2. A way of describing a meterial with particular physical characteristics
- 5. The chemicals added to food are called ...
- 8. An increase of gases in the atmosphere leading to global warming
- 10. Another word for poisonous
- 11. A household chemical product used to disinfect
- 12. an abbreviation for the gases which have now been removed from aerosols to protect the ozon layer
- 13. The chemicals derived from petrol or natural gas
- 15. A form of energy from nuclear power which is dangerous to humans and animals
- 17. A chemical found in diamonds and coal