what are the main human sources of green house gases?

Question

if you could refer me to some credible stats, that would be amazing.

Answer 1

Cows.

Answer 2

#1 is probably coal fired power plants. Coal is almost pure carbon, so it makes almost pure CO2 when it burns.

Another big coal user is steel smelting.

Oil is a hydrocarbon, with hydrogen, oxygen and carbon atoms in it, so it makes some CO2 and some steam when it burns. Some of the oil is used in electric power plants, some is used in ships and trains and planes and trucks and buses and tractors. Some is also used in private cars, but that is really a less important source, even if everyone had a Hummer.

Natural gas is mostly methane, which is CH4 (1 carbon atom and 4 hydrogen atoms), so it makes mostly steam and a little CO2.

Other sources of CO2, like animals and people breathing out CO2, don't count. That is because the carbon in that CO2 came from the food the animal ate, which came from a green plant that took carbon atoms out of the air to make the body of the plant. Life does not cause global warming. Only taking carbon out of the ground where it has been hiding for hundreds of millions of years and then burning it to make CO2 is a cause of global warming.

Answer 3

If we are looking for what has changed, it is the large burning of fossil fuels that has gone along with the industrial revolution.

We have had animals with digestive gasses forever. But the very number of animals, including humans, may represent a qualitative as well as quantitative shift.

Deforestation appears to be a one time burn that puts a lot of carbon dioxide into the air. Yet it is the reduction in forest sequestration that has the bigger impact.

Answer 4

solid waste, trees and wood products, and also as a result of other chemical reactions (e.g., manufacture of cement). Carbon dioxide is also removed from the atmosphere (or “sequestered”) when it is absorbed by plants as part of the biological carbon cycle.
Methane (CH4): Methane is emitted during the production and transport of coal, natural gas, and oil. Methane emissions also result from livestock and other agricultural practices and by the decay of organic waste in municipal solid waste landfills.
Nitrous Oxide (N2O): Nitrous oxide is emitted during agricultural and industrial activities, as well as during combustion of fossil fuels and solid waste.
Fluorinated Gases: Hydrofluorocarbons, perfluorocarbons, and sulfur hexafluoride are synthetic, powerful greenhouse gases that are emitted from a variety of industrial processes. Fluorinated gases are sometimes used as substitutes for ozone-depleting substances (i.e., CFCs, HCFCs, and halons). These gases are typically emitted in smaller quantities, but because they are potent greenhouse gases, they are sometimes referred to as High Global Warming Potential gases (“High GWP gases”).

Answer 5

This is a think question. MY answer is soda pop, beer, some wines, and aerosol containers powered by CO2.

Answer 6

deforestation, hummers, too many trucks (they should use trains instead), fossil fuels, and all that comes from too many people. because of the amount of people we need more space (cutting down trees for houses and to live in the area), and more food (cutting down more trees for farmland), so, don't have 10 children...PLEASE!!!

Answer 7

Cows and pigs. The weird part is did you know we produce them to. When we fart, isn't that gross? It's called methain.

It's true but, weird!