| A | B |
|---|
| Population | group of individuals of the same species that live in the same area |
| Geographic dispersion/distribution | describes the area inhabited by a population. |
| Population density | the number of individuals per unit area |
| Population growth rate | is how fast a population grows. It is determined by three things: the number of births, the number of deaths and the number of individuals that enter or leave the population. |
| Birth rate | – how many births occur in a population |
| Death rate | how many deaths occur in a population |
| If the birth rate increases and the death rate decreases | then a population grows |
| If the death rate increases and the birth rate decreases | then a population shrinks. |
