| A | B |
| carrying capacity | largest population at any given time |
| commensalism | one benefits and the other is not helped or harmed |
| competition | two species fighting over the same resource |
| density | number of individuals of the same species in a given space |
| dispersion | pattern of distribution of organisms in a population |
| exponential growth | growth in which numbers increase by a certain factor |
| growth rate | increase in the size of an organism or population over time |
| limiting resource | a particular natural resource, when limited, determines the carrying capacity |
| mutualism | both species benefit |
| niche | the role of an organism |
| parasitism | one benefits the other is harmed |
| population | a group of organisms of the same species |
| predation | predator chances its prey |
| reproductive potential | the maximum number of offspring that a given organism can reproduce |
| symbiosis | a relationship where two organisms live in close association with each other |