| A | B |
| Immigration | the moving of people INTO a population |
| Birth Rate | the number of births in a population |
| Death Rate | the number of deaths in a population in a certain amount of time |
| Estimate | an approximation of a number based on a reasonable ASSUMPTION |
| Limiting Factor | an environmental factor that prevents a population from increasing in population |
| Emigration | the LEAVING of a population |
| Population Density | the number of individuals in a specific area. |
| Carrying Capacity | the largest population that an area can SUPPORT |