| A | B |
|---|
| biotic factor | the living components of the environment |
| abiotic factor | the physical and chemical characteristics of the environment |
| acclimation | when some organisms adjust their tolerance to abiotic factors. |
| conformer | Organisms that do not regulate their internal conditions. |
| dormancy | a state of reduced activity during periods of unfavorable activity. |
| fundamental niche | The range of conditions that a species can potentially tolerate and the range of resources it can potentially use. |
| generalist | species with broad niches |
| habitat | where the organism lives. |
| migration | Moving to another, more favorable environment, during periods of unfavorable conditions. |
| niche | A way of life, or the role a species plays in an environment. |
| realized niche | The range of resources that a species actually uses. |
| regulator | organisms that use energy to control their internal conditions. |
| resource | the energy and materials that a species needs. |
| specialist | species that have narrow niches |
| tolerance curve | A graph of performance versus values of an environmental variable, such as temperature. |
