What are greenhouse gases and how are they affecting global temperatures?

Answer 1

Greenhouse gasses is a gas in the atmosphere That absorbs and emits radiation. The primary greenhouse gasses in the earth's atmosphere are water vapor, carbone dioxide , methane, Nitrous oxide and ozone. Greenhouse gasses affect the earth by keeping the heat at earth making the ice melts which increase the water level. Making floods and many people will be killed.

Answer 2

H2O (water vapor), CO2 (carbon dioxide), and CH4 (methane) are three primary greenhouse gases. There are others. What distinguishes these gasses from N2 (nitrogen) and O2 (oxygen) are that they tend to trap infrared radiation emitted from the ground. Light passes through the atmosphere, is absorbed by the earth or ocean, and is emitted back in the infrared frequency. This radiation would pass back out through space if there was only nitrogen and oxygen. The more heat trapping gasses there are, the more likely this radiation will be absorbed, raising global temperatures just a little bit.

The effect is not noticeable over the course of a year, or even a couple of years. Long term trend lines show our planet is indeed warming, and the evidence of this warming abounds. First we have temperature records. Receding glaciers and animal migrations provide further evidence for climate change. Human beings currently release 30 billion tons (30,000,000,000) of CO2 into the atmosphere each year. It is difficult to imagine why anyone might think we could continue doing this without any environmental impact whatsoever, unless we had good evidence the climate was NOT changing.

Answer 3

Water vapor, because it traps heat near the surface better than any other. Methane is probably #2. Carbon dioxide is a distant third.

Unfortunately, water vapor in the atmosphere can't be (or at least, has not been) modelled properly in computer simulations, which goes a long way to explaining why the results of the simulations are so different from experimental data. Methane is produced by nearly all biological processes, including decomposition of swamps and animal flatulence and belches.

Answer 4

carbon dioxide is the main green house gas. It effects the planet because it stays in the atmosphere and pollutes the enviroment.

Answer 5

CO-2s...after they reach the ozone layer, they combine with the other chemicals and break down the thin layer that is shielding the earth from the sun's harmful rays.

Answer 6

The three main greenhouse gases are water vapour, carbon dioxide and methane. They keep the atmosphere warm, but too much of them is causing global warming and climate change.