| A | B |
|---|
| Abiotic Factors | Nonliving parts of the environment. |
| Adaptation | An inherited trait that increases an organism’s chance of survival and reproduction in a certain environment. |
| Biotic factors | The living parts of an ecosystem. |
| Coevolution | Two or more species evolving in response to each other. |
| Commensalism | Relationship between two species in which one species benefits and the other is neither helped nor harmed. |
| Community | A group of interacting populations of different species. |
| Competition | The relationship between species that attempt to use the same limited resource. |
| Ecosystem | All living organisms in a certain area as well as their physical |
| Evolution | Change in the genetic characteristics of a population from one generation to the next. |
| Extinction | The irreversible disappearance of a population or species. |
| Habitat | The place where an organism lives. |
| Host | Organism from which a parasite takes its nourishment. |
| Mutualism | A relationship between two species in which both benefit. |
| Natural Selection | Unequal survival and reproduction of organisms. Due to the presence or the absence of inherited traits. |
| Niche | The way of a life of an organism. |
| Organism | An individual living thing. |
| Parasites | Organism that lives in or on another organism and feeds on it |
| Parasitism | The relationship between a parasite and its host. |
| Population | A group of individuals of the same species living in a particular area. |
| Predation | The act of killing and eating another organism. |
| Predator | Organism that kills and eats another organism. |
| Prey | An organism that is killed and eaten by another organism. |
| Species | Organismsn able to reproduce together and that resemble each other in appearance, behavior, and internal structure. |
| Symbiosis | A relationship between two organisms. It can be a good relationship or a bad relationship. |
