Across
- 2. the number of different species that live in an area
- 5. an area of ground covered by a single crop
- 6. one solution to protect endangered animals is _________ breeding
- 7. if larger numbers of livestock are kept in an area than would normally live there, we call this type of farming__________
- 9. one solution to protect endangered plants is __________
- 10. a greenhouse gas
Down
- 1. farmers use these to kill weeds
- 3. farmers use _________ breeding over many generations to improve production
- 4. farmers use these to kill insect pests
- 8. a term used to describe a species which risks extintion
- 11. a process which results in the reduction of oxygen in water