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Published byMarlene Evans Modified over 9 years ago
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9/24/13 Objective: How are humans impacting the environment? Do Now: What is this picture depicting?
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What is the function of this greenhouse? Sunlight passes through the glass, where the interior absorbs the radiant energy changing it to heat, the glass stops the heat from escaping
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The Greenhouse Effect
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Greenhouse gases (CO2, N2, methane, water vapor) trap infrared heat and keep the Earth warm
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Global Warming Carbon dioxide from the burning of fossil fuels adds too many greenhouse gases, resulting in increases in the Earth’s temperature
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What is this graph showing?
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Global Warming
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Increased probability and intensity of droughts and heat waves
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Global Warming Melting of the polar ice caps can raise sea levels –Puts more freshwater into the ocean –Can cause endangerment of animals
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The Ozone Layer The ozone layer: a layer of gases that absorbs radiation from the sun
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Ozone Depletion The ozone gets depleted (gets holes in it) when cleaners, air conditioners and refrigerators are used and release chemicals called chlorofluorocarbons (CFCs) into the atmosphere.
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So What? - Without ozone, more UV rays hit earth - Holes in the ozone can lead to higher rates of skin cancer.
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Endangered Endangered animals are still living today but are in immediate danger of extinction.
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Threatened A species that is likely to become endangered if it is not protected.
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Conservation
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Captive Breeding Programs
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Preserving Genetic Material
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Zoos, Aquariums, Parks, Gardens
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Impact on Water Cycle Pollutants such as fertilizers,, pesticides, oil, sewage Acid rain from sulfur dioxide reacting with water
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Impact on Carbon Cycle Burning of fossil fuels (oil, gas, coal) Deforestation
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