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Populations and Resources


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1.species that have rapidly decreasing numbers of individuals
6.type of urban air pollution resulting from a combination of chemical pollutants, particulate matter, and sulfur dioxide
8.types of wastes that are not easily broken down and can exist in the enrionment for many years
16.factors that limit population density
19.keeping an organism or an area from harm or destruction by the establishment of parks, wildlife habitats, and other refuges
20.proportions of any given population that are either in their pre-reproductive, reproductive, or post-reproductive years
22.rain or snow more acidic than unpolluted rainwater
23.fresh water from rain and surface streams that accumulates in underground reservoirs
24.coal, oil, and natural gas formed from the buried remains of organisms
25.occurs when the last members of a species die
26.contamination of air, water, or land by wastes produced in such excess that they cannot be recycled by natural processes
2.most often weather-related occurrences that affect populations regardless of their density
3.species with numbers of individuals so low that it is in danger of extinction
4.study of populations that includes birth rates and death rates, fertility rates, age structure, and geographic distribution
5.resources replaced or recycled by natural processes
7.protective layer at the top of the stratosphere; it absorbs most of the sun's harmful radiation
9.resources available in limited amounts that cannot be replaced and cannot be recycled quickly by natural means
10.explosive population growth in which the number of reproducing individuls increases by an ever-increasing rate
11.a natural phenomenon by which carbon dioxide and other atmospheric gases prevent heat from escaping into space
12.maximum, stable population size an environment can support over time
13.renewable or nonrenewable parts of the natural environment that are used by humans
14.planned management of wildlife habitats and other natural areas to prevent exploitation or destruction
15.movement of individuals into a population
17.solid particles of soot contained in smoke released by burning fossil fuels
18.solid wastes that can be broken down by natural processes
21.the movement of individuals out of a population

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