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14 Cards in this Set
- Front
- Back
Biotic Potential
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Is the rate at which a population would grow if every new individual survived to adulthood and reproduced at its maximum capacity
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Limiting Resources
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The resources that limit the growth of a population.
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Environmental resistance
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The combined effect of all of the factors that limit population growth
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Carrying capacity
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Is the maximum population size an environment can support for a long period of time
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Hunter-gatherers
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People who obtain their food by hunting, fishing, and gathering wild plant foods
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Agricultural revolution
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Change from hunting and gathering to agriculture had such dramatic results
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Environmental refugees
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People driven from their homes by severe environmental damage
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Summary
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Each population has a characteristic biotic potential. The biotic potential of a population represents the greatest growth possible if all members of the population reproduce at maximum capacity.
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Summary
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If there are no limits to the growth of a population, it will grow exponentially. Factors such as scarce resources and disease provide environmental resistance, preventing populations from growing at their biotic potential.
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Summary
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Carrying capacity is the maximum population a habitat can support indefinitely. A population that excedds carrying capacity for long periods degrades its environment and reduces future carrying capacity.
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Summary
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The transistion from hunting and gathering to farming initiated the agricultural revolution, which allowed the human population to increase. Industrialization has led to further population increases by lowering the death rate.
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Summary
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Today, the human population is growing at different rates in different parts of the world. The theory of demographic transition predicts that human populations will grow rapidly with increased industrialization, but will later stabilize as birth rates fall.
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Summary
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Population Growth
is determined by: biotic potential and carrying capacity |
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Summary
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Population Growth
is described by: the theory of demographic transition and is devided into three phases: 1. hunter-gatherer societies 2. agricultural revolution 3. industrialization |