Across
- 2. active or hunting at night
- 5. a number of food chains combined
- 8. a system formed by organisms interacting with each other and with their non living surroundings in a balanced way
- 13. term used to describe a species that are close to extinction and very small numbers remain
- 16. depending on each other for survival
- 18. a scientist who studies the growing plants
- 19. times of the year when fires are most likely to occur
- 20. an animal that is eaten by a predator
Down
- 1. species that is experiencing a rapid population decline and in danger of becoming extinct if the drop of numbers continues
- 3. raised bank built to prevent water reaching buildings
- 4. an organism in or on which a parasite lives
- 6. the place where life exists; consists of Earth and its atmosphere
- 7. non-living factors in the environment
- 9. part of the stem, root or leaf that is able to grow into a new plant
- 10. organisms that have the same food source and live in the same habitat
- 11. individuals that are exactly the same as each other
- 12. an organism that lives on or in a host, taking the host; the host gets nothing in return and may be harmed
- 14. the term used to describe different types of living things
- 15. the chemical in plants that traps in energy from the Sun and gives plants their green colour
- 17. an animal that eats both plants and animals