Where do the two most abundant greenhouse gases come from?

Answer 1

• Petrol and diesel motor vehicles produce CO2, N2O and hydrocarbons.
• Power stations and other industries that burn fossil fuels release CO2 and N2O. For example, Huntly Power Station produced about 3.26 million tonnes of carbon dioxide in 2001.
• Domestic heating appliances that burn fossil fuels, two- and four-stroke lawnmowers, backyard incinerators and barbecues all produce CO2.
• Livestock, landfills and waste water treatment facilities produce methane.
• Agricultural land use and some industrial processes increase nitrous oxides levels.
• They also happen to come from natural body gas
• Pringus can make lots of CO2.

Answer 2

Natural greenhouse gas (carbon dioxide, water vapour and methane) come from:

* Evaporation of water: Water vapour

* Decomposition and decay: Carbon dioxide and methane

* Ruminant flatulence: Methane * Volcanos: Carbon dioxide

Answer 3

Greenhouse gases such as carbon dioxide are mostly cycled through the atmosphere, earth, and ocean, meaning that carbon is only added to the system in a few areas. Natural sources of carbon and carbon dioxide include volcanoes, while human sources include all types of industry (factories and electricity production) as well as automobiles.

Carbon terms such as plant respiration and the ocean are much, much larger than what humans emit, but the key is the carbon balance over time (as these terms are generally balanced by subsequent photosynthesis and reuptake, respectively). Other greenhouse gases such as methane are natural as well, but also have contributions from humans. These sources include livestock, and landfills, and cultivation of crops such as rice.

Water vapor is by far the most abundant greenhouse gas, but it has no emissions; it is cycled through the atmosphere with a residence time of a few days, and therefore doesn't build up. Most of the remaining greenhouse gases are entirely anthropogenic, such as the halocarbons and CFCs. They exist in very small concentrations in the atmosphere, but are very powerful and remain in the atmosphere for a very long time.

Greenhouse gases that we can do something about are carbon dioxide and methane, largely. Carbon dioxide is emitted whenever fossil fuel (coal, oil and natural gas) is burnt usually to produce electricity, or to power transport. Methane comes from garbage rotting in landfill dumps, and from farm animals, mostly cows, belching.

A:Greenhouse gases naturally blanket the Earth and keep it about 33 degrees Celsius warmer than it would be without these gases in the atmosphere. Greenhouse gases like water vapour, carbon dioxide, and methane trap the sun's heat and prevent it all radiating out to space.

This is called the Greenhouse Effect and is a natural effect supported by the water and carbon cycles of the earth.

When we discovered and started burning fossil fuels (coal, oil and natural gas) at the start of the Industrial Age we began releasing tons of extra carbon dioxide that had been stored underground since the time when fossil fuels were first laid down. We also cut down vast forests which had been storing carbon in their trunks and branches. All this means that more carbon dioxide moves into the atmosphere as a greenhouse gas.

More details:

The greenhouse effect is the heating of the Earth due to the presence of greenhouse gases. It is named this way because of a similar effect produced by the glass panes of a greenhouse. Shorter-wavelength solar radiation from the sun passes through Earth's atmosphere, then is absorbed by the surface of the Earth, causing it to warm. Part of the absorbed energy is then reradiated back to the atmosphere as long wave infared radiation. Little of this long wave radiation escapes back into space; the radiation cannot pass through the greenhouse gases in the atmosphere. The greenhouse gases selectively transmit the infared waves, trapping some and allowing some to pass through into space. The greenhouse gases absorb these waves and reemits the waves downward, causing the lower atmosphere to warm.

Answer 4

Most of the carbon dioxide in our atmosphere comes from nature. Specifically, it comes from rotting material. A tree that is rotting in the forest produces the same amount of CO2 as a tree being burnt.

Answer 5

On earth, water vapor is the most abundant greenhouse gas, created by solar distillation of ocean surface, primarily. Second is CO2, created largely by human combustion of coal and oil. A little over half the current level of CO2 was already present through prehistoric time.

Answer 6

Greenhouse gases come from a lot of different places. Water vapor and carbon dioxide are the most abundant greenhouse gases, but the amount of the gases isn't always the most important part. Methane is another greenhouse gas that makes up less than 9 percent of the air, but it traps in heat more efficiently than carbon dioxide, so it has a greater effect on the greenhouse effect. It's important to understand that when talking about ways to reduce greenhouse gases and prevent global warming. To answer you original question carbon dioxide comes from many places. Cars and factories emit the most carbon dioxide. Water vapor mainly comes from the evaporation of water.

Answer 7

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