| A | B |
|---|
| estimate | an approximation of a number, based on reasonable assumptions |
| birth rate | the number of births in a population in a certain amount of time |
| death rate | the number of deaths in a population in a certain amount of time |
| immigration | means moving into a population |
| emigration | means leaving a population |
| population density | the number of individuals in a specific area |
| limiting factor | an environmental factor that causes a population to decrease |
| carrying capacity | the largest population that an area can support |
