Terms : Hide Images
| 9363504719 | Exponential population growth | Growth of a population in an ideal, unlimited environment, represented by a J-shaped curve when population size is plotted over time. |  | 0 |
| 9363504720 | Logistic population growth | Population growth that levels off as population size approaches carrying capacity. |  | 1 |
| 9363504721 | K-selection | Also called density-dependent selection. Characterized by few offspring with little or much parental care. | 2 | |
| 9363504722 | R-selection | Also called density-independent selection. Characterized by many offspring with little or no parental care. | 3 | |
| 9363504723 | Density independent | Limiting factor that affects all populations in similar ways, regardless of population size. fires, floods, extreme cold | 4 | |
| 9363504724 | Density dependent | Limit the population growth only when the density reaches a certain level - competition, parasitism, predation | 5 | |
| 9363504725 | Ecological niche | all of the physical, chemical, and biological factors that a species needs to survive, stay healthy, and reproduce in an ecosystem | 6 | |
| 9363504726 | Symbiosis | A close relationship between two organisms in which at least one of the organisms benefits | 7 | |
| 9363504727 | Parasitism | A relationship between two species in which one species benefits from the other species, the host, which is harmed | 8 | |
| 9363504728 | Mutualism | A symbiotic relationship in which both organisms benefit | 9 | |
| 9363504729 | Commensalism | A relationship between two species in which one species benefits and the other is neither helped nor harmed | 10 | |
| 9363504730 | Facilitation | An interaction in which one species has a positive effect on the survival and reproduction of another species without the intimate association of a symbiosis | 11 | |
| 9363504731 | Trophic structure | The different feeding relationships in an ecosystem, which determine the route of energy flow and the pattern of chemical cycling | 12 | |
| 9363504732 | Biomass | Total amount of living tissue within a given trophic level | 13 | |
| 9363504733 | Detritivores | feed on plant and animal remains and other dead matter | 14 | |
| 9363504734 | Eutrophication | excessive richness of nutrients in a lake or other body of water, frequently due to runoff from the land, which causes a dense growth of plant life and death of animal life from lack of oxygen. | 15 | |
| 9363504735 | Trophic efficiency | the percentage of production transferred from one trophic level to the next usually 10% | 16 |
