| A | B |
|---|
| Habitat | all the biotic and abiotic factors involved in the area that an animal lives |
| ecological niche | all the physical, chemical, and biological factors needed by a species to survive and reproduce |
| competitive exclusion | when two species are going after the same resources in an environment; one species will be pushed out |
| ecological equivalent | species that occupy similar niches but live in different geographical areas |
| competition | when 2 organisms fight for the same limited resources |
| predation | the process by which one organism captures and feeds upon another organism |
| symbiosis | close ecological relationship between 2 or more organisms of different species living with each other |
| mutualism | interspecies connection where 2 different organisms benefit from each other |
| commensalism | relationship between 2 organisms in which one benefits and the other is neither helped nor harmed |
| population crash | a dramatic decline in the size of a population over a short period of time |
| limiting factor | keeping down the size of a population |
| Density-dependent limiting factorsrs | are affected by the number if individuals in a given area |
| Density-independent limiting factors | are aspects of the environment that limits a population's growth regardless of its density of the population |
| succession | is the sequence of biotic changes that regenenrae a damaged community or crete a community in a previously uninhabited area |
| primary succession | the establishment and development of an ecosys |
| pioneer species | the first organisms that live in a previously uninhabited aea |
