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10 Cards in this Set
- Front
- Back
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What is a population? |
All the members of the same species in a given area |
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How do the following affect population size: Births, deaths, immigration, emigration, age, distribution of current population? |
Birth: Pop. goes up; deaths: pop. goes down; immigration: pop. increases; emigration: pop. decreases. |
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what is exponential growth in a population? |
New individuals are added and outnumber those that die. No limits, hasn't reached it max potential. |
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what is logistic growth? |
The population becames overcrowded or insufficient food was supply, the growing population begins to level off. 'S' Curve |
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Define carrying capacity. What are some factors that affect carrying capacity? |
How many individuals an ecosystem can support Factors include disease, limits on the environment. |
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Describe growth of the human population and reasons for that growth. |
Agriculture (increased food supply), the industrial revolution (lead to greater prosperity), improvements in medical care, and education. |
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Where in the world is the human pop. growing the most? The least? |
Most growth: in less-developed countries; least growth: more-developed countries. |
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Define community. |
A group of interacting species. |
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What are the habitat and niche of a species? |
Habitat: The location where the community typically lives. Niche: the way in which an organism fits into an ecological community or ecosystem |
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Competition |
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