| Term | Definition |
| Carrying capacity | the number of individuals that can be sustained in an area |
| R strategists | reproduce early, many small unprotected offsprin |
| K strategists | reproduce late, few, cared for offspring |
| Malthus | said human population cannot continue to increase - consequencces will be war, famine & disease |
| Doubling time | rule of 70, 70 divided by growth rate |
| Replacement level fertility | the number of children a couple must have to replace themselves (2.1 developed, 2.7 developing) |
| World Population | almost 6.5 billion |
| US population | 305 million |
| Pre industrial stage | birth & death rates high, population grows slowly, infant mortality high |
| transitional stage | death rate lower, better health care, population grows fast |
| industrial stage | decline in birth rate, population growth slows |
| Post industrial stage | low birth and death rates |
| Age Structure diagrams | (broad base - rapid growth) (narrow base - negative growth) (uniform shape - zero growth) |
| 1st & 2nd most populated countries | china, and india |
| most important thing affecting population growth | low status of women |
| ways to decrease birth rate | family planning, contraception, economic rewards & penalities |