| A | B |
|---|
| habitat | biotic and abiotic factors in the area where an organism lives |
| niche | food, behavior, abiotic conditions an organism needs to survive |
| competitive exclusion | 2 species competing for same resources, one species will "win" |
| ecological equivalent | species that occupy similar niches, but in different areas |
| competition | when two organisms compete for the same resources |
| predation | one organism eats another |
| symbiosis | close ecological relationship between 2 or more organisms of different species |
| mutualism | symbiosis when both organisms benefit |
| commensalism | symbiosis when 1 organism benefits, the other is not affected |
| parasitism | symbiosis when one organism is harmed |
| population density | measurement of the # of individuals in an area |
| population dispersion | way in which individuals of a population are spread in an area |
| immigration | individuals moving into a population |
| emigration | individuals moving out of a population |
| carrying capacity | max # of individuals an enviroment can support of a species |
| density dependent limiting factor | dependent upon the number of individuals in an area |
| density independent limiting factor | not dependent upon the number of individuals in an area |
| succession | regeneration of an area or community that has been damaged |
| pioneer species | 1st organisms that live in an area |
| secondary succession | reestablishment of a damaged ecosystem where the soil was left intact |
