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14 Cards in this Set

  • Front
  • Back
Biotic Potential
Is the rate at which a population would grow if every new individual survived to adulthood and reproduced at its maximum capacity
Limiting Resources
The resources that limit the growth of a population.
Environmental resistance
The combined effect of all of the factors that limit population growth
Carrying capacity
Is the maximum population size an environment can support for a long period of time
Hunter-gatherers
People who obtain their food by hunting, fishing, and gathering wild plant foods
Agricultural revolution
Change from hunting and gathering to agriculture had such dramatic results
Environmental refugees
People driven from their homes by severe environmental damage
Summary
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.
Summary
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.
Summary
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.
Summary
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.
Summary
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.
Summary
Population Growth
is determined by:
biotic potential
and
carrying capacity
Summary
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