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www.reference.com/article/causes-global-warming-cb25df622d7a6808

Global warming is caused primarily by an increased greenhouse effect, or the proclivity of certain gases in the atmosphere to allow sunlight to enter but not to depart. Although the Earth has natural periods of warmer and cooler temperatures overall, global warming is exacerbated by gases produced b

www.reference.com/article/definition-global-warming-6a6e5fbf942b035

Global warming is an increase in global average atmospheric temperature that results in corresponding climate changes, possibly a result of the greenhouse effect. The greenhouse effect is a result of increased levels of greenhouse gases as a consequence of human industry and agriculture.

www.reference.com/article/global-warming-real-33e96fadc5cb6915

Studies published in peer-reviewed scientific journals state that upward of 97 percent of actively publishing climate scientists agree that the climate is changing, likely due in part to human activity. Many prominent scientific organizations, such as the American Meteorological Society, The Geologi

www.reference.com/article/did-global-warming-come-549f5998b93058e8

The National Wildlife Federation explains that global warming is thought to be caused by the greenhouse effect, which is the result of certain gases in the atmosphere trapping the heat of the sun and preventing it from radiating back into space. There are many gases responsible for this effect, incl

www.reference.com/article/global-warming-a7770716d4c1c7f5

Global warming is caused by increased levels of carbon dioxide and other greenhouse gases in the atmosphere. This increase is the result of human activity, such as the burning of coal to produce energy and the deforestation of land for agricultural purposes.

www.reference.com/article/tree-plant-7c55115cf79a3722

A tree is a plant. Trees are perennial plants that use photosynthesis to make their own food like other plants. They have woody stems and trunks and tend to live for many years.

www.reference.com/article/global-warming-mean-d3800b391ec311fe

Global warming is the process by which the Earth’s average atmospheric temperature increases over time. The Earth has experienced both global warming and cooling during its 4.5-billion-year history. However, the current rate of temperature increase exceeds that which occurred in the past. Many scien

www.reference.com/science/did-global-warming-start-f1eee8032b22d762

Most scientists agree that man-made climate change, or global warming, began in earnest during the industrial revolution, which occurred between the 18th and 19th centuries. This occurred, they say, as a result of a large number of greenhouse gases released into the atmosphere. However, in 2008, res

www.reference.com/article/effects-global-warming-f70586f5ec72acb8

Some of the effects of global warming include increased melting of land ice, faster rises in sea level and increased temperature averages. It also increases the demand for energy and contributes to extreme weather conditions.

www.reference.com/article/global-warming-happen-b38b4a72620a2d51

Global warming happens when carbon levels in the atmosphere rise, trees are cut down in large quantities and the ozone layer is destroyed. Without managing these things, the Earth risks suffering from adverse effects.