| A | B |
|---|
| Biotic Factors | the living parts of an ecosystem - animals, plants, organisms |
| Abiotic Factors | non-living parts of the ecosystems - sunlight, temperature |
| Organism | one individual living thing |
| Species | group of organisms that can reproduce together |
| Population | group of individuals of the same species living in one particular place |
| Community | group of interacting populations of different species |
| Niche | the way of life for different animals |
| Habitat | place where an animal lives |
| Predation | when one animal kills and eats another animal |
| Prey | animal that gets eaten during predation |
| Predator | animal that does the eating in predation |
| Competition | relationship between two species in which they attempt to use the same limited space |
| Parasites | organisms that live and feed on other organisms without killing it immediately |
| Host | organism that a parasite feeds on |
| Parasitism | relationship between a parasite and its host |
| Mutualism | a cooperative partnership between two species |
| Commensalism | relationship in which one species benefits and the other is neither harmed nor helped |
| Natural Selection | term used by Darwin to describe the unequal survival and reproduction that results from the presence or absence of particular traits |
| Evolution | change in the genetic characteristics of populations from one generation to the next |
| Adaption | an inherited trait that increases an organism chance of survival |
| Coevolution | when two or more species evolve in response to each other |
| Extinction | irreversable disappearance of a population or species |
| Ecosystem | includes all the different organisms living in a certain area |
