Across
- 4. Fertilisers may be...
- 6. Natural Fertilisers include...
- 7. Plants compete with each other for resources such as
- 8. Fertilisers that have been used for thousands of years
- 9. Substances that kill plants by disrupting their growth in some way
- 11. Then selecting ......... that show the desirable features
- 13. Substances that kill insects
- 15. Has been selectively bred for hundreds of years
Down
- 1. Selective Breeding makes things come...
- 2. Substance that contains important nutrients for plant growth
- 3. Involves humans selecting individual animals or plants with desirable features (two words, first one has 9 letters and the second one 8)
- 5. Species can cause huge damage to crops
- 10. The use of chemical fertilisers increases the yield of...
- 12. Selective breeding can be applied to animals such as...
- 14. Can grow rapidly among crop plants