Human Impacts on the Environment Mrs. Harlin. 2.2.1 Infer how human activities (including population...
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Transcript of Human Impacts on the Environment Mrs. Harlin. 2.2.1 Infer how human activities (including population...
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Human Impacts on the Environment
Mrs. Harlin
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2.2.1
Infer how human activities (including population growth, pollution, global warming, burning of fossil fuels, habitat destruction and introduction of nonnative species) may impact the environment.
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Population Growth
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Technology
Agricultural equipment is mass producing food.
Fertilizer allows great yield. Pesticides prevent crop destruction. Water filtration and heaters have cleaned up
contaminated water. Vaccinations are preventing people from
getting disease.
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Consumption of Resources
Habitat Destruction-> Loss of biodiversity Waste dumping->Shortages of clean water Burning fossil fuels-> Global Warming Manufactured Chemicals->Ozone
Destruction Factories-> Acid Rain
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N.C. Ecosystems
Urban development in the Piedmont has led to habitat destruction and water runoff
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N.C. Ecosystems
Kudzu is an invasive plant
It is nonnative Kudzu originally
was introduced into the U.S. from Asia in the late 1800s for erosion control and as a livestock forage
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Production of Waste
Law requires human waste to be treated; however animal waste is not treated.
More than 335 million tons of "dry matter" waste is produced annually on farms in the U.S.
During decomposition, manure emits harmful gases such as ammonia and hydrogen sulfide. Waste lagoons can leak or rupture, polluting the surrounding soil and water systems.
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N.C. Ecosystems
Waste lagoons on hog farms
Hurricane Floyd in 1999 led to widespread water contamination.
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Global Change
Carbon dioxide from fossil fuels is causing global warming.
Acid rain caused by sulfur dioxide emitted from factories is causing a loss plant life which will indirectly affect the entire food chain.
CFC’s (chlorofluorocarbons) are causing a hole in the ozone layer which is letting UV rays through.
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Ozone hole above Antarctica
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Ice Melting at the North Pole
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N.C. Ecosystems
Beach erosion
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N.C. Ecosystems
Acid Rain
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