Across
- 2. The Haber process is used to make this chemical
- 4. Features which can be inherited show _______ variation
- 5. A reaction that gives out energy
- 6. Features which are influenced by our surroundings and experiences show _________ variation
- 9. Describes the differences between individuals of the same species
- 10. This gas is needed for fuels to burn
- 12. A chemical reaction in which a fuel is burned
Down
- 1. This solution is used to test for carbon dioxide gas
- 3. The name given to the turning effect of a force
- 5. Using electricity to split up a chemical
- 7. A reaction that needs or uses up energy
- 8. This molecule contains our genetic code
- 11. This is the point around which a lever turns