Princeton Review Ch. 5
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19 terms
Terms | Definitions |
|---|---|
 biotic potential | amount that the population would grow if there were unlimited resources. |
| carrying capacity | (K) max population size that can be supported by the available resources in the region |
| r-selected | reproduce early, high capacity of reporduction r-rabbit |
| k-selected | reproduce later, produce fewer offsprings, more care for each. k- kangaroo |
| boom-bust cycle | common among r-strategist |
| predator-prey cycle | the predator's graph rises/lowers AFTER the prey's graph does. |
| actual growth rate | (crude birth rate - crude death rate) = % 1000 |
| total fertility rate | number of children a woman will bear during her lifetime. |
| environmental resistance | conditions that slow a population's growth. (part of pre-industrial state) |
| 3 most significant factors that contribure to increase in human population | clean water, systems for sanitary waste disposal, and better medical care (food production also) |
| micronutrients | need in small amounts. vitamins, iron, minerals such as calcium |
| macronutrients | need in large amoutns. proteins, carbohydrates, fats |
| urban sprawl | emigration of people out of the city and into the suburbs. reduce quality of life of urban livers |
| ecological footprint | amount of teh Earth's surface that's necessary to supply the needs of, and dispose of the waste, of a particular population. IPAT= I = P x A x T (I=total impact. P=population size. A= affluence, T= level of technology) |
| background extinction rate | natural rate of extinction |
| biodiversity hot spots | describe a higher diverse region that faces severe threats and has already lost 70% of its orginal vegetation |
| when a population encounters environmental resistance, | slows down its growth rate |
| higher temperature --> DO levels | lower DO levels. colder temp=hold more DO |
| rainshadow effect | drier conditions on the leeward side of the mountain |
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