how is global warming cause?

Answer 1

through widening the hole of ozone layer where ozone layer is consider as a layer of barrier that shield the earth from the heat of the Sun. Hence when the hole of the ozone layer getting bigger. More heat will be transmitted to the earth hence increase the temperature of the our mother Earth.

Such factor of weakening of our ozone layer might be the smoke produced due to burning. Or through carbonflourochloride(CFC) in refridgerator.

Answer 2

Global warming is caused due to the greenhouse effect.
Greenhouse effect:A glass house which is made up entirely of glass and where tropical plants are kept in cold climate is a green house
According to the green house effect,the glass allows only the short wavelength infrared rays to pass through it.The rays emitted by the sun in part are shortlength IR rays.This effect can even be observed in a car parked in the sun.
Now in the atmosphere gases like methane and carbon-di-oxide allow the short wavelength IR waves to travel through to the earth.The earth absorbs these rays and then again emits IR rays.But these waves have longer wavelength and the gases mentioned above don't let the heat waves to escape out due to greenhouse effect.This increases the atmospheric temperature which is global warming
Due to global warming the polar ice caps are melting which causes a rise in water level in the sea and leads to flooding of coastal areas and also many more ill-effects

Answer 3

Global warming happen due to an undirectly effect of black body radiation of earth. When heat from sun received by earth he will radiate it back in to the space. But there is a layer on atmosphere that reflect it back to earth, and make earth warmer. This layer consist of carbon dioxide, methana, cfc, etc, and most of this substance produced by human by ratio 95% and the rest produced by nature. So we can say that human cause Global Warming especially through the industry and transportation that using fossil fuel.

Answer 4

You know in world day to day population is increases so their requirements is also increases......
The global warming is caused by many things.The causes are mainly classified into the two groups man-made or anthropogenic causes, and natural causes.

Natural Causes

Natural causes are causes created by nature. One natural cause is a release of methane gas from arctic tundra and wetlands. Methane is a greenhouse gas. A greenhouse gas is a gas that traps heat in the earth's atmosphere. Another natural cause is that the earth goes through a cycle of climate change. This climate change usually lasts about 40,000 years.

Man-made Causes

Man-made causes probably do the most damage. There are many man-made causes. Pollution is one of the biggest man-made problems. Pollution comes in many shapes and sizes. Burning fossil fuels is one thing that causes pollution. Fossil fuels are fuels made of organic matter such as coal, or oil. When fossil fuels are burned they give off a green house gas called CO2. Also mining coal and oil allows methane to escape. How does it escape? Methane is naturally in the ground. When coal or oil is mined you have to dig up the earth a little. When you dig up the fossil fuels you dig up the methane as well.
We already discussed about population.The population is greatly increasing.More peoples in the socitity more vechiles(which relases mainly large amout of CO ) and the usage fossilfuel and forest products which implies increase in air methane and CO which ultimately causes the Global Warming.

Answer 5

The green house-gases such as carbon dioxide, methane, hydrogen etc captures the heat from the sun and do not allow it to radiate back into space. This stored heat causes an increase in the earth's temperature which is termed as global warming.

Answer 6

When there are too much of greenhouse gases in the atmosphere, then too much heat gets trapped in the atmosphere which causes global warming. Melting of polar ice caps is caused by global warming.

Answer 7

Only by fluctuations in the surface temperature of the sun. That's why there is global warming on the planet Mars.
Man has no effect on the increase of the earth's temperatures.

Answer 8

Global warming refers to the incearse in the level of green house gases such as CO2 and other such things.The levels are increasing due to the emission of fumes from cars.This increased level of such gases ,leads to warming of the earth's atmosphere,as they trap the terestail radiation of the earth and the ice caps on the poles melts to increase the sea level.!

Answer 9

Man's emissions of greenhouse gases, mostly from cars, trucks, and electric power plants burning fossil fuels.

It's not natural. People can wave their hands and make crazy arguments, unsupported by data, but the actual scientific data clearly shows they're wrong. Here's the proof.

The arguments about volcanoes are flat wrong, bordering on ridiculous. Volcanoes emit a tiny fraction of what man produces. And the dust they throw up cancels most of that out.

"a far greater amount of CO2 is contributed to the atmosphere by human activities each year than by volcanic eruptions. Volcanoes contribute about 110 million tons/year, whereas other sources contribute about 10 billion tons/year"

http://www.geology.sdsu.edu/how_volcanoe...

The IPCC report considered the measured values of solar variation, and it's nowhere near enough to cause the wrming. The total warming is 2.6 watts per meter squared. The solar incrose is 0.12 watts per meter squared.

And the warming is far more rapid than any natural cycle could be.

http://www.ipcc.ch/spm2feb07.pdf...

Natural CO2 emissions may be more than man. But naturally produced CO2 is recycled by the "carbon cycle". Man is messing that up by digging up carbon the natural cycle buried over millions of years, and buring it very fast. Here's the data. The little squiggles are the natural cycle doing its' thing. CO2 goes down in the summer when plants are active, and up in the winter when they're not. The huge increase is us, burning fossil fuels.

http://scrippsco2.ucsd.edu/graphics_gallery/mauna_loa_record/mlo_record.html

The scientific evidence is overwhelming, which is why these people, who are not liberals, think it's real. You may or may not respect all of them, but surely you respect some of them.

"The science of global warming is clear. We know enough to act now. We must act now."

James Rogers, CEO of Charlotte-based Duke Energy.

"The overwhelming majority of atmospheric scientists around the world and our own National Academy of Sciences are in essential agreement on the facts of global warming and the significant contribution of human activity to that trend."

Russell E. Train, former environmental official under Presidents Nixon and Ford

"We simply must do everything we can in our power to slow down global warming before it is too late. The science is clear. The global warming debate is over."

Arnold Schwarzenegger, Republican, Governor, California

"Our nation has both an obligation and self-interest in facing head-on the serious environmental, economic and national security threat posed by global warming."

John McCain, Republican, Senator, Arizona

"These technologies will help us become better stewards of the environment - and they will help us to confront the serious challenge of global climate change."

President George Bush

Answer 10

Global warming is caused by the green house gases which absorbs the reflected energy from the earth and reradiates towards earth. thus earths cooling mechanism is prevented and further it adds more heat energy towards earth.

green house effect will cause increasing sea level, reduction of land, increasing productivity of plants in polar region, increase pest and disease in living organism especially plants.\

Manikandan.K
Dept of soil, TNAU,Cbe-3