| A | B |
|---|
| population density | # of individuals per unit area |
| immigration | movement into an area |
| emigration | movement out of an area |
| exponential growth | individuals reproduce at a constant rate producing a j-shaped curve |
| logistic growth | population's growth slows or stops producing an s-shaped curve |
| carrying capacity | largest # of individuals that an environment can support |
| limiting factor | causes population growth to decrease |
| density-dependent limiting factor | limiting only when the population density reaches a certain level |
| density-independent limiting factor | Affect all populations in similar ways, regardless of size |
| renewable resource | can regenerate quickly and is replaceable |
| nonrenewable resource | cannot be replenished through natural processes |
| deforestation | loss of forests |
| biological magnification | concentrations of harmful substances increase in organisms at higher trophic levels in a food chain |
