| A | B |
|---|
| ancestor | A family member who lived before you |
| decade | 10 years |
| adopt | to legally take in a child not your own |
| stay-at-home mother | mother who doesn't work |
| nuclear family | parents and children |
| divorce | a separation of husband and wife |
| biology | study of living things |
| community | a large group of people |
| social institutions | family, government, school |
| decline | to go down |
| developing country | Third World country |
| widow | A woman whose husband died |
| millenium | 1000 years |
| blended family | family and step-family together |
| head of household | in charge of the family |
| industrialized | lots of business and industry |
| single-parent family | only the mother or the father |
| support | to help |
| extended family | all your relatives |
| birthrate | how many babies were born |
