Biological Impact

This is caused by chlorofluorocarbons (CFCs)

• acid rain
• global warming
• ozone layer depletion
• bioaccumulation

This effects global warming because there are less organisms to take in carbon dioxide from the atmosphere.

• urban development
• deforestation
• invasive species
• pesticide use

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This is caused by an increase of carbon dioxide in the atmosphere

• global warming
• ozone depletion
• acid rain
• bioaccumulation

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Kudzu grows out of control in North Carolina because nothing eats it in this habitat. Kudzu is an example of 

• deforestation
• urban development
• invasive species
• uncontrolled species

DDT is a pesticide that kills mosquitoes. If a small amount gets into the water it will bioaccumulate.  This will result in

• small fish have a larger concentration of DDT than large fish
• large fish having a larger concentration of DDT than small fish
• water having a larger concentration of DDT than the fish that live in the water

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Burning of fossil fuels can create acid rain.  Acid rain can damage lakes because

• the fish that live there can only survive in a basic environment
• the fish that live there can only survive in a neutral environment
• habitat destruction
• fish can not survive in an acidic environment

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Biodiversity is the number of species that live in an area.  The number one threat to biodiversity is

•  waste lagoons
• beach erosion
• habitat distruction
• water run off

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When farmers put nitrogen containing fertilizer on the ground, it can run off into lakes when it rains.  This may result in an algal bloom, causing the lake to loose oxygen as the algae decompose.  This is known as

• nitrogen fixation
• eutrophication
• nitrification
• algae poisoning 

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