global warming has started because of population of the o-zone layer are our world and many scientist think that the world might end IN 2012
"population of the o-zone layer" and "many scientist think that the world might end in 2012" Come on what kind of gobbledygook is that?
Globan warming and global cooling are natural cycles caused by sunspot activity and other natural factors.
It has started already. The earth is gradually warming.
The ozone has been depleted. This is due to global warming.
Global Warming
they started to become endangered when global warming had started to increase
We know now that global warming started in the Industrial Revolution, more than 200 years ago, when we discovered and started to burn fossil fuels, which released carbon dioxide (CO2). This is one of the greenhouse gases that are causing global warming.
The planet and everbody in it. Pollution is how global warming was started
No, global warming probably started in Britain with the invention of the steam engine and the start of the Industrial Revolution. The discovery that coal was readily available underground and that it burned so easily was the trigger for global warming.
global warming!!!!!!
1000 years ago there was no global warming, just the normal warming of the earth by the sun. Global warming started when we discovered fossil fuels and started burning them seriously, at the beginning of the Industrial Revolution, about 250 years ago. This burning released age-old carbon dioxide that had been hidden underground for 300 million years. Carbon dioxide is a greenhouse gas, so extra gas in the atmosphere captures more heat, and this is global warming.
Humans did not start global warming. It is a natural phenomena. However our societies are certainly accelerating it. The extent of that acceleration is hotly debated and a cause for considerable controversy.
There is no such thing as "a global warming" global warming only happens to earth because human and our unruly decrease in the earths resources. HUMANS cause global warming.
Global warming has already started. If we stopped carbon dioxide emissions today, there is still enough additional greenhouse gases in the atmosphere to continue warming for some years. We can prevent the worst case of global warming, but governments have to take serious action first to reduce, and then to ban carbon emissions altogether.