| A | B |
|---|
| greenhouse effect | gasses holding heat in the atmosphere |
| habitat | area where an organism lives |
| competition | more than one organism seeking the same resource |
| resource | anything an organism needs to survive and reproduce |
| predation | one organism captures and eats another organism |
| symbiosis | two different species live close together and interact with each other |
| mutualism | both organisms benefit |
| commensalism | One organism benefits and the other is not helped or harmed |
| parasitism | One organism benefits by living on or within another while causing it harm |
| density | shows the average number of organisms in an area |
| exponential | growth rate that requires unlimited resources |
| logistic | growth rate when resources are limited |
| carrying capacity | greatest size of a population that can be supported by an ecosystem |
| renewable resources | can be regenerated |
| biodiversity | variety or richness of life at all structural levels |
| richness | the number of unique species |
| frequency | Percentage of times a species is observed |
| abundance | the number of individuals present in each taxonomic group |
