| A | B |
|---|
| Ecological niche | The area an organism lives in and the conditions it requires |
| Fundamental niche | The part of the ecosystem an organism could inhabit |
| consumer | animals that eat other animals as food |
| producer | organisms that can make their own food (like plants) |
| autotroph | another name for a plant or producer |
| heterotroph | another name for an animal or consumer |
| carnivore | organisms that eat meat (lions, tigers) |
| herbivore | organisms that eat plants only (sheep, cows) |
| omnivore | organsims that eat both plants and animals (humans) |
| decomposer | organism that gets nutrients from dead plants/animals |
| Realised niche | The actual part of the ecosystem an organism is able to inhabit |
| predator | captures, kills and consumes another organism |
| prey | the organism eaten by the predator |
| Competitive exclusion | Species with the same requirements cannot live together permanently in the same area, one is bound to be a stronger competitor |
| Sedentary animals | Animals which move slowly or rarely |
| Sessile | An animal which is immobile |
| ecosystem | all of the organisms and the non-living environment found in a place |
| Lincoln index | A way to estimate the size of mobile populations using mark release recapture |
| Chi squared test | Tests to see if there is a significant difference betwen two frequencies |
| competition | two or more organisms want (and fight for) the same resource (like water) |
