Ecology Terms

3. Factor that affects population numbers. (7)
5. Study of interrelationships of living organisms with their surroundings. (7)
6. Non-living or abiotic (8)
7. Place where an orgainisum lives. (7)
8. Relationship where animals of different species help each other. (9)
13. Number of organisms of a species in an area at a particular time. (10)
14. Animal that hunts and eats prey (8)
16. Example of a physical factor in the environment is water and air.......(11)
17. Organism that feeds off another eg tick. (8)
18. Example of an important physical factor is amount of drinking.............. (5)
19. "Living together" of organisms of different species for a long period of time. (9)
20. Living and non-living surroundings. (11)
21. Animal that is eaten by a predator. (4)

1. Example of an important living or biotic factor. (4)
2. Organism on or in which a parasite lives. (4)
4. A natural unit of living and non-living parts that interact to produce a stable system. (9)
9. Type of adaption relating to an organism's shape and size. (10)
10. Relationship where two different organisms use the same resource of food. (11)
11. All the organisms in a given area at a given time. (9)
12. Characteristic of an orgainisum that enables it to function more effectively in it's surroundings. (10)
15. Type of adaption relating to an animal's actions. (11)