11 i don't understand what you are speaking about 12 if people drank less, there would be fewer car crash accident 14 she is always talking about money, its annoying 15 i came by bus, it was a long and boring journey 16 it is ten minutes from here.go to the farm and get left 17 i don't remember having phoned him before leaving 18 if you resigned, you would not be entitled to unemployement benefits 19 they must have moved because i haven't heard about them for a long time 20 i would rather we talked about the last science's progress essay If you look in an astronomy textbook about Venus and want to know if carbon dioxide in the atmosphere causes warming, the answer is a very simple yes. Global Warming is only controversial because it affects economic interests.

I'm not sure what you mean by how is does so: are you looking for a scientific explanation about how global warming gases let sunlight through the atmosphere but stop reflected light (heat) from bouncing back to outer space? Or how will warming be devastating: hurricanes, crop failures, species extinctions, tropical diseases expanding, coastal and island flooding as ice melts and oceans rise, deserts expanding, changing weather patterns causing mass migration with flooding in some places and droughts in others, and most of all, surprises. Its not only the global warming....our economy will destroy much more if we don t change the rules. depending the global warming... our Clima is a fragile balance...only a few parameters changed..and perhaps we drive into a complete changing of this system.
Its similar too the effect, when you mix some colours ....there is a point when all is getting black...and...black is no colour. but the peoples who drive the economical system at the moment only think in terms of fast profit, they NEVER take any responsibility which results that may cause!!!! So: WE HAVE TO CHANGE THE RULES! ozone layer depletion is the straight answer for