FURTHER TO the Skeptics...! EPA.GOV USA...!
CO2...! And Green House Gases...!
http://co2now.org
http://www.co2science.org/
http://www.epa.gov/climatechange/ghgemissions/gases/co2.html
http://www.epa.gov/climatechange/science/causes.html
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Carbon dioxide (CO2) is the primary greenhouse gas emitted through human activities. In 2011, CO2 accounted for about 84% of all U.S. greenhouse gas emissions from human activities. Carbon dioxide is naturally present in the atmosphere as part of the Earth's carbon cycle (the natural circulation of carbon among the atmosphere, oceans, soil, plants, and animals). Human activities are altering the carbon cycle—both by adding more CO2 to the atmosphere and by influencing the ability of natural sinks, like forests, to remove CO2 from the atmosphere. While CO2 emissions come from a variety of natural sources, human-related emissions are responsible for the increase that has occurred in the atmosphere since the industrial revolution. [1]
U.S. Carbon Dioxide Emissions, By Source
Pie chart that shows emissions by use. 38 percent is electricity, 31 percent is transportation, 14 percent is industry, 10 percent is residential and commercial, and 6 percent is other (non-fossil fuel combustion).
Note: All emission estimates from the Inventory of U.S. Greenhouse Gas Emissions and Sinks: 1990-2011.
The main human activity that emits CO2 is the combustion of fossil fuels (coal, natural gas, and oil) for energy and transportation, although certain industrial processes and land-use changes also emit CO2. The main sources of CO2 emissions in the United States are described below.
Electricity. Electricity is a significant source of energy in the United States and is used to power homes, business, and industry. The combustion of fossil fuels to generate electricity is the largest single source of CO2 emissions in the nation, accounting for about 38% of total U.S. CO2 emissions and 32% of total U.S. greenhouse gas emissions in 2011. The type of fossil fuel used to generate electricity will emit different amounts of CO2. To produce a given amount of electricity, burning coal will produce more CO2 than oil or natural gas.
Transportation. The combustion of fossil fuels such as gasoline and diesel to transport people and goods is the second largest source of CO2 emissions, accounting for about 31% of total U.S. CO2 emissions and 26% of total U.S. greenhouse gas emissions in 2011. This category includes transportation sources such as highway vehicles, air travel, marine transportation, and rail.
Industry. Many industrial processes emit CO2 through fossil fuel combustion. Several processes also produce CO2 emissions through chemical reactions that do not involve combustion, for example, the production and consumption of mineral products such as cement, the production of metals such as iron and steel, and the production of chemicals. Fossil fuel combustion from various industrial processes accounted for about 14% of total U.S. CO2 emissions and 12% of total U.S. greenhouse gas emissions in 2011. Note that many industrial processes also use electricity and therefore indirectly cause the emissions from the electricity production.
Carbon dioxide is constantly being exchanged among the atmosphere, ocean, and land surface as it is both produced and absorbed by many microorganisms, plants, and animals. However, emissions and removal of CO2 by these natural processes tend to balance. Since the Industrial Revolution began around 1750, human activities have contributed substantially to climate change by adding CO2 and other heat-trapping gases to the atmosphere.
In the United States, since 1990, the management of forests and non-agricultural land has acted as a net sink of CO2, which means that more CO2 is removed from the atmosphere, and stored in plants and trees, than is emitted. This sink offset about 14% of total emissions in 2011 and is discussed in more detail in the Land Use, Land-Use Change, and Forestry section.
To find out more about the role of CO2 warming the atmosphere and its sources, visit the Causes of Climate Change page and the Greenhouse Gas Indicators page in the Science section.
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...Climate Change is occurring...! AND THEIR "JESUS" and "Jehovah" ain't going to stop it, much less will we ever see them...!
...if you mention the PLEIADES in the Bible, obviously you know about ORION which is bigger and below in the skies...! To not mention the PLEIADES, could be mentioning the PYRAMIDS of GIZA, or clearly not mentioning GIZA...! Which could mean: GIZA was not built by the HEBREWS slaves...! That is why they do not mention them ! AS GIZA had to be there before the HEBREWS Bedouins...!
...OCEAN SEA RISE COULD REACH THE ENTRY OF THE MAIN GIZA PYRAMID and fill up the UNDERGROUND Chamber...!
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