ecology Matthew 7K

4. very low rainfall and extreme temperatures.
5. are characterized by consistent rainfall, mild temperatures and lots of sand and hard rock.
7. Factors include all of the non-living things in an environment.
11. the presence in or introduction into the environment of a substance which has harmful or poisonous effects.
13. often defined as the largest group of organisms in which any two individuals of the appropriate sexes
14. Factors including all of the living things in an environment.
16. involves the interactions between all the living things
17. the permanent removal of trees to make room for something besides forest.
18. webs, are similar to food chains but they show are more complete picture of the feeding relationships within an ecosystem.
19. any individual living thing

1. the natural home or environment of an animal, plant, or other organism.
2. tending to spread very quickly and undesirably or harmfully.
3. an animal that naturally preys on others.
6. able to create their own food using energy from the sun.
8. not able to make their own food and so must eat other living organisms
9. fire a fire in scrub or a forest, especially one that spreads rapidly.
10. special type of consumer which gets its energy from dead organisms.
12. features of an organism which help it to survive and reproduce in their environment.
15. an animal that is hunted and killed by another for food.
18. Chains, show the movement of energy through different trophic levels via a single pathway.