Across
- 2. a system formed by organisms interacting and with their non-living surroundings in a balanced way
- 5. native vegetation that remains unchanged when surrounding areas have been changed by activities such as grazing or forestry
- 8. scientists who study the interactions between living things and their environments
- 9. the flow of energy from organism to organism in a series of feeding relationships
- 10. raised bank built to prevent water reaching buildings
- 11. individuals that are exactly the same as each other
- 12. non-living factors in the environment
- 14. all living things
- 15. a consumer that eats only other animals
- 16. times of the year when fires are most likely to occur
- 19. an animal that eats other animals
- 20. organisms that get the energy they need by breaking down waste products
Down
- 1. a consumer that eats a producer
- 3. an interaction between two organisms in which one of the benefits and the other one is not affected
- 4. an animal that eats other animals
- 6. species that is experiencing a rapid population decline and is in danger of becoming extinct if the drop in numbers continues
- 7. a method of controlling unwanted pests by using a natural predator or disease
- 13. an animal that eats both plants and animals
- 17. active or hunting at night
- 18. the process of mating one breed of plant or animal with another breed of plant or animal