What started global warming?

Answer 1

The emission of greenhouse gases, mostly carbon dioxide, primarily through burning of fossil fuels, enhanced the natural greenhouse effect and began making the earth warmer.

Global warming has already started, as shown by the rise in sea levels and warming in global temperatures.

Answer 2

as the industrial revolution began in the world such as industries factories motor cars infect every thing which release the carbon .due to which the temprature rise on earth .this is the main cause of global warming

Answer 3

Earth's climate has changed numerous times throughout geologic history. Many of these changes over the past few million years are due largely to periodic variations in earth's orbit known as "Milankovitch Cycles," after the Serbian mathematician who discovered them.

Global warming, however, typically refers to the current warming trend which is primarily due to human activity. Specifically, humans have found it profitable to burn fossil fuel from coal and oil, thus releasing over 30 billion tons of carbon dioxide, a greenhouse gas, into the atmosphere each year. The gradual accumulation of this heat trapping gas is responsible for the rapid rise in earth's temperature.

The origin of the phrase is from Doctor Wally Broecker, and is from a article called: "Climate Change: Are we on the Brink of a Pronounced Global warming" in Science magazine published in 1975.

In the paper, he had accurately predicted the rate and amount of temperature increase, but the foundation of his analysis - glacial cycles seen in an ice core from Greenland - were never corroborated.

Answer 4

By being too productive! At the beginning of the Industrial Revolution, about 250 years ago we discovered that we could dig up coal and burn it for industry and transport. Burning coal, a fossil fuel, released carbon dioxide that had been hidden underground for 300 million years. This overloaded the carbon cycle which normally removes carbon from the atmosphere, so carbon dioxide began to build up around the earth. The greenhouse gases absorbed more and more heat and the earth began to get warmer. Global Warming!

Answer 5

Humans, when we began burning fossil fuels (coal, oil and natural gas).