Across
- 8. Removal of waste products
- 10. Organism that only eats animals
- 12. Type of farming used to produce maximum yield
- 13. Process to release energy
- 14. Chemical used to help plants grow quicker and healthier
- 15. An environment consisting of interdependent plants and animals
Down
- 1. Chemical sprayed on plants to kill pests like insects and weeds
- 2. Type of species that can be used to determine presence of pollution in water
- 3. The build up of harmful chemicals in the food chain
- 4. Organism that only eats plants
- 5. Start of a food chain, gets energy from sunlight
- 6. Organism that eats plants and animals
- 7. When fertilisers pollute water, resulting in excessive growth of plants and the depletion of oxygen
- 9. Type of hens that are kept in poor conditions to reduce costs
- 11. Indicator of pollution in air