What are greenhouse gases?

Question

What are greenhouse gases?

Answer 1

Some gases ("greenhouse gases") let sunlight in, which warms the Earth, and then block that heat from leaving. That's the "greenhouse effect", and it's a natural thing, mostly caused by water vapor.

Man is making excessive amounts of greenhouse gases, mostly by burning fossil fuels. That causes the delicate natural balance to go out of whack and the Earth warms. That's global warming.

It won't be a Hollywood style disaster. Gradually coastal areas will flood and agriculture will be damaged. But it will be very bad. Rich countries will cope, but it will take huge amounts of money. In poor countries many people will die of starvation, but not all of them.

Most scientists say, in 20-50 years. But we need to start right now to fix it, fixing it will take even longer than that.

More information here:

http://profend.com/global-warming/

Lots of numerical scientific data proving it real here:

http://en.wikipedia.org/wiki/Image:Clima...

http://www.ipcc.ch/SPM2feb07.pdf

Answer 2

GASES SUCH AS CO2 THAT DAMAGES THE EARTH'S OZONE LAYOR.  THE GASES ALSO CAUSE GLOBAL WARMING.

Answer 3

They are gases in the atmosphere that trap heat from the Sun''s rays.

Answer 4

oh, god! i just learned this is science!! *searches through notes on computer* dang i guess i can't find it. Greenhouse gasses are gasses that contribute to the greenhouse effect. The greenhouse effect is when the energy is trapped in the earth's atmosphere, making it warmer like in a greenhouse.