9/24/14 Objective: How are humans impacting the environment? Do Now: Take out your Picture...
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![Page 1: 9/24/14 Objective: How are humans impacting the environment? Do Now: Take out your Picture reflection from yesterday And your hw.](https://reader035.fdocuments.in/reader035/viewer/2022062809/5697bfec1a28abf838cb857b/html5/thumbnails/1.jpg)
9/24/14
Objective: How are humans impacting the environment?
Do Now: Take out your
Picture reflection from yesterday
And your hw
![Page 2: 9/24/14 Objective: How are humans impacting the environment? Do Now: Take out your Picture reflection from yesterday And your hw.](https://reader035.fdocuments.in/reader035/viewer/2022062809/5697bfec1a28abf838cb857b/html5/thumbnails/2.jpg)
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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The Greenhouse Effect
• 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, too much heat being trapped, resulting in increases in the Earth’s temperature
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Global Warming
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Global Warming
• 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 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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What is the #1 cause?• Habitat destruction leads to species
endangerment
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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