Fossil Fuels Coal emits twice as much carbon dioxide as natural gas per unit of

Fossil fuels coal emits twice as much carbon dioxide

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Fossil Fuels Coal emits twice as much carbon dioxide as natural gas per unit of energy delivered. Oil is halfway in between. Oil’s chemical composition is a little less carbon and a little more hydrogen than coal. Thus you get a little more energy production per unit of CO 2 by burning oil than you do with burning coal. Shale oil - 2.5 to 3.5 times as much carbon dioxide per unit of energy produced as natural gas. Over all it emits more carbon dioxide than coal. Shale oil is the type of oil transported by the Keystone Pipeline. Natural Gas (92% methane) – emits less CO 2 per unit of energy produced than either oil or coal. Natural gas has tripled as a US energy source since 1990. Three units of fossil fuel to one unit of electricity
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Coal 23% of greenhouse gas emissions in the USA are from coal power plants. Power Plants Using Coal in the USA 2005 = 619 2015 = 427 2016 - gas surpassed coal 2016 - 10% of energy generation from renewables Jobs from Coal 1923 - 863,000 1980 - 225,000 1985 – 76,000 2015 - 66,000 2016 - 50,500
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Nuclear Power 1) Does not contribute to climate change. 2) Security Issue 3) Economic Issue Electric Power produced by nuclear power plants is much more expensive than electricity produced by other sources of energy. 3) Waste Issue Nuclear waste mostly now stored around power plants. 4) Supply Issue There may not be enough uranium for nuclear power generation after 30 years.
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Deforestation and CO 2 20% of the world’s CO 2 emissions are from deforestation . Every year another 24.5 million acres are deforested world-wide. Deforestation occurs for: a) large soya farms producing soybeans for export b) large cattle ranches producing beef for export c) logging of tropical hardwoods d) large palm oil plantations producing palm oil for export e) subsistence farming
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Deforestation and CO 2 Emissions Forest soils, and the organic matter buried in them, typically contain three to four times as much carbon as the vegetation above. Cutting and burning trees releases a surge of carbon dioxide into the atmosphere. Deforestation also means that trees which formerly absorbed and stored carbon dioxide, no longer do so, and carbon dioxide levels are allowed to increase. Trees also absorb heat. So when they are absent, a mechanism to absorb some heat is eliminated.
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Climate: the long-term weather pattern for a location. What controls Earth’s climate? Incoming solar energy, reflectivity (albedo) most important Volcanic eruptions may cause short- and long-term changes. Given these factors, Earth’s temperature should be -4°F. Instead, it’s 59°F Why? Greenhouse gases absorb & reradiate heat back to the Earth, preventing it from being lost to space. Greenhouse gases have been present for billions of years. Sources: Biological activity Tectonic activity
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Atmospheric Carbon The global atmosphere contains substantially more carbon by weight (one and one half times as much) as do all the trees, grass, and all other terrestrial plants and animals in the world.
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