Biodiversity and farming

2. Plants growing where they are not wanted
7. To replace trees or bushland that has been cleared
8. An environmental movement established by farmers and the Australian Conservation Foundation
12. A person who is concerned about the protection of the environment
14. Preservation or protection of the natural environment
16. Capable of being continued with minimal long-term effect on the environment
18. The business of producing crops and raising livestock
19. To live in the same place at the same time
20. Insects and other animals considered to be a nuisance to humans

1. Chemical used to kill weeds
3. The owner of a large property on which sheep or cattle graze
4. The variety of all life forms on earth and the ecosystems they live in
5. Originating and living naturally in an area or environment
6. A strip of soil planted with trees
9. Removing trees and other vegetation from the land
10. Left over
11. Land covered with woods or trees
13. Animals raised for human consumption
15. Land covered with plants suitable for grazing animals, especially cattle or sheep
17. Having returned to an untamed state after being domesticated