How does global warmig start?

Question

what causes it?

Answer 1

Car's...anything that litters or does something bad to the oxygen or earth and also greenhouse effect or whatever...

Answer 2

Watch "an inconvenient truth". It will show you all about what will happen if global warming continues. A great movie

Answer 3

when we go around driving cars  polluting  the air and now there`s a big hole  in our green house gasses in the atmosphere

Answer 4

Green house gases........

Answer 5

It's a cycle that usually lasts 20 to 30 years, but nobody really knows when a warming or cooling cycle is going to start or stop.  From 1940 to 1975 we were in a cooling cycle and from 1975 to 1998 we were in a warming cycle.  It's been pretty stable since 1998, but many scientists are saying we are going into a cooling period for the next decade or so.  As far as what causes it, it's mainly just a natural occurance.   Most people would just say that's the way God planned it.

Answer 6

Global warming is caused by the gases in the atmosphere getting to thick the greenhouse  effect makes us live but with the gases we use so much its thickening thus making the sun rays stay in the earth due to the thick gas build up that is why the earth is warmer because the rays cant reach out of our atmosphere

Answer 7

Global Warming or the Greenhouse Effect is what makes our planet liveable for most life forms.

Water Vapor is the primary gas responsible for the warming process where water from lakes, rivers and oceans evaporate to create clouds which reflect the suns energy back down to the earths surface.  Without it, the earths surface temperature would be much colder.

Many people incorrectly identify Carbon Dioxide as the most important of the Global Warming gases.  Where Carbon Dioxide is listed, the majority of those sources don't even mention Water Vapor.

Below is a URL for the NOAA which is one of the few resources that even mention Water Vapor.  It is hard to find anyone who will state the specific percentages of the Global Warming Gases in our atmosphere, but some heavy searching will produce estimates of up to 95% Water Vapor followed by Carbon Dioxide at 1%.