Term
Populatons increase due to births and immigration
Populations decrease due to deaths and emigration |
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Definition
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Term
| Growth under ideal conditions ("J" shaped curve) larger the population, faster it grows |
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Definition
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Term
| Growth with limits. Environmental factors cause a population's growth to level off (S-shaped growth curve) |
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Definition
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Term
| Population size at which growth is zero. Population is as large as it can get in its current environment |
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Definition
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Term
The growth rate slows as it reaches the carrying capacity because of the:
-Food Supply
-Habitat for living and breeding
-Parasite and disease risk
-Predation Risk |
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Definition
| Density Dependent Factors |
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Term
| Limit population size. Include natural disasters. |
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Definition
| Density Independent Factors |
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Term
| Shape that represents stable population |
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Definition
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Term
| Shape that represents a growing population, even if birth rates drop |
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Definition
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Term
| Human population on Easter Island outgrew its resources and crashed |
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Definition
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Term
| Why is it difficult to estimate the carrying capacity of humans in the future |
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Definition
expanding into new habitats
increasing the agricultural productivity of the land
find ways to live at higher densities |
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Term
| Loses carbon through CO2. Trees capture carbon. Carbon has be removed because of burning fossil fuels and trees are chopped down. |
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Definition
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Term
| Responsible for blocking ultraviolet radiation. Essential part of the stratosphere. |
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Definition
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Term
| The primary culprit responsible for the destruction of the ozone layer in the stratosphere |
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Definition
| Chlorofluorocarbons (CFCs) |
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Term
| Describes a region's average temperature, precipitation, humidity, solar radiation, etc. |
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Definition
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Term
| Changes in Earth's climate patterns |
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Definition
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Term
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Definition
| Intergovernmental Panel on Climate Change |
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Term
| Trap heat in the atmosphere |
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Definition
Global warming and greenhouse gases
Carbon dioxide, methane, nitrous oxides, CFCs |
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Term
| Possible consequences of global warming |
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Definition
| Melting polar ice caps cause rising sea levels. Warmer oceans may fuel more hurricanes. Altered distribution of climax communities |
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