Why Did the Ice Age Happen?

Answer

Ice Age happened because of the long-term reduction in the temperature of the Earth's surface and atmosphere. It resulted in the presence or expansion of continental ice sheets, polar ice sheets and alpine glaciers. A general reduction in the amount of carbon dioxide in the atmosphere may contribute to the development of ice ages.
Q&A Related to "Why Did the Ice Age Happen?"
Ice age denotes a geological period of long term reduction in the temperature of the earths surface nd atmosphere. This result in an expansion of continental ice sheets.
http://www.ask.com/web-answers/Science/Nature/why_...
on Earth
http://wiki.answers.com/Q/What_happen_through_the_...
It may have something to do with the eccentricity and the ellipse in the earths orbit around the sun. Currently we are supposed to be in a tightening ellipse orbit towards the sun
http://answers.yahoo.com/question/index?qid=200703...
The ice on Antarctica and Greenland is enough to say we are in an ice age. This is what is meant in. John Voelker's answer. The last glacial era was about 12,000 years ago, but sometimes
http://www.quora.com/When-will-the-next-ice-age-ha...
1 Additional Answer
There are many theories as to why there was a period of time called the ice age. There are at least five known ice ages in Earth's history. Generally, atmospheric conditions, changes in the Earth's orbit, wind and ocean currents and the movement of tectonic plates are some of the factors of an ice age. You can find more information here: http://en.wikipedia.org/wiki/Ice_age
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