Across
- 2. The transitional zone between two distinct communities
- 6. The largest living organism
- 7. relating to farming food without using chemicals
- 10. the process by which an unstable atomic nucleus loses energy by radiation
- 13. the destruction of waste materials by burning.
- 14. A mixture of smoke and fog
- 15. A type of soil which retains water and is always damp
Down
- 1. Species seriously at risk of extinction
- 3. the increase in concentration of toxins up the food chain
- 4. Underground layer of water-bearing permeable rocks
- 5. process that converts biomass or carbonaceous materials into gases
- 8. an organism whose genome has been altered by the introduction of foreign DNA from another species artificially
- 9. Supplying dry land with water by means of ditches etc
- 11. Mixture of or decaying organic material
- 12. The wave energy released by earthquakes