what is global warming?

Global warming is the rise in the average temperature of Earth's atmosphere and oceans since the late 19th century, and its projected continuation. Since the early 20th century, Earth's mean surface temperature has increased by about 0.8 °C (1.4 °F), with about two-thirds of the increase occurring since 1980 Warming  unequivocal, and scientists are more than 90% certain that it is primarily caused by increasing concentrations green house gases produced by human activities such as deforestation and the burning of fossil fuels.well i read it my encyclopedia........i hopes i will help u...!!!!!!!!!!!!!!!

the rise in the atmosphere of earth due to the accumulation of carbon dioxide and warming of earth is called global warming.

A gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, CFCs, and other pollutants

Global Warming is the increase of Earth's average surface temperature due to effect of greenhouse gases, such as carbon dioxide emissions from burning fossil fuels or from deforestation, which trap heat that would otherwise escape from Earth. 

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IT IS THE RISE IN TEMPERATURE OF THE EARTH'S ATMOSPHERE.

• Global Warming is an increase in the earth's atmospheric temperatures widely due to an increase in the greenhouse effect resulting especially from pollution.

• Global warming is melting of ice from poles because of the increase in the extent of carbon dioxide. If due to global warming all the ice from our poles melt into water, the water level on earth increases and submerge the land.

• Another major cause of global warming is deforestation.

• Sea levels are expected to rise between 7 and 23 inches (18 and 59 centimetres) by the end of the century, and continued melting at the poles could add between 4 and 8 inches (10 to 20 centimetres).

• Less fresh water will be available.

• Species that depend on one another may become out of sync. For example, plants could bloom earlier than their pollinating insects become active.

• Natural calamities and disaster would occur at lesser frequencies and with more destructive power.Hurricanes and other storms are likely to become stronger.

• Severe heat waves would lead to death of millions of people all around the world.

• While the idea of swimming in a warmer ocean is pleasant to most human beings, increasing ocean temperatures could cause serious ecological damage.

the average temperature of the earth is gradually increasing this is called global warming.

the sudden increase in the temperature of the earth due to green house effect is termed as global warming

our atmosphere has many gases.... some of them are known as the green house gases for example CO2..... CO2 helps to trap the heat of the sun.. when the amount of CO2 increases, the trapped heat also increses resulting in the increase in temperatures.. this is termed as global warming...!!!

Global warming is the rise in the average temperature of Earth due to increased greenhouse effect.It is caused due to excessive accumulation of greenhouse gases such as Co_2.It increases the temperature of the earth resulting in the melting of polar caps,posing danger to biodiversity and rise in sea level among many causes.

global warming is the rise in temperature bcoz of increase in the amount of CO₂ in the atmosphere.