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  2. Timeline of glaciation - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_glaciation

    A less severe cold period or ice age is shown during the Jurassic-Cretaceous (150 Ma). There have been five or six major ice ages in the history of Earth over the past 3 billion years. The Late Cenozoic Ice Age began 34 million years ago, its latest phase being the Quaternary glaciation, in progress since 2.58 million years ago.

  3. Ice-nine - Wikipedia

    en.wikipedia.org/wiki/Ice-nine

    Ice-nine is described as a polymorph of ice which instead of melting at 0 °C (32 °F), melts at 45.8 °C (114.4 °F). When ice-nine comes into contact with liquid water below 45.8 °C, it acts as a seed crystal and causes the solidification of the entire body of water, which quickly crystallizes as more ice-nine. As people are mostly water ...

  4. Greenhouse and icehouse Earth - Wikipedia

    en.wikipedia.org/wiki/Greenhouse_and_icehouse_Earth

    Throughout Earth's climate history (Paleoclimate) its climate has fluctuated between two primary states: greenhouse and icehouse Earth. [1] Both climate states last for millions of years and should not be confused with the much smaller glacial and interglacial periods, which occur as alternating phases within an icehouse period (known as an ice age) and tend to last less than one million years ...

  5. National Council of Educational Research and Training

    en.wikipedia.org/wiki/National_Council_of...

    The textbooks are in color-print and are among the least expensive books in Indian book stores. [11] Textbooks created by private publishers are priced higher than those of NCERT. [ 11 ] According to a government policy decision in 2017, the NCERT will have the exclusive task of publishing central textbooks from 2018, and the role of CBSE will ...

  6. Little Ice Age - Wikipedia

    en.wikipedia.org/wiki/Little_Ice_Age

    The General Crisis of the seventeenth century in Europe was a period of inclement weather, crop failure, economic hardship, extreme intergroup violence, and high mortality linked to the Little Ice Age. Episodes of social instability track the cooling with a time lapse of up to 15 years, and many developed into armed conflicts, such as the ...

  7. Ice Age - Wikipedia

    en.wikipedia.org/wiki/Ice_Age

    Ice Age: The Meltdown, a 2006 sequel; Ice Age: Dawn of the Dinosaurs, a 2009 sequel; Ice Age: A Mammoth Christmas, a 2011 TV special; Ice Age: Continental Drift, a 2012 sequel; Ice Age: The Great Egg-Scapade, a 2016 TV special; Ice Age: Collision Course, a 2016 sequel; The Ice Age Adventures of Buck Wild, a 2022 spin-off

  8. Laurentide ice sheet - Wikipedia

    en.wikipedia.org/wiki/Laurentide_ice_sheet

    During the Late Pleistocene, the Laurentide ice sheet reached from the Rocky Mountains eastward through the Great Lakes, into New England, covering nearly all of Canada east of the Rocky Mountains. [8] Three major ice centers formed in North America: the Labrador, Keewatin, and Cordilleran. The Cordilleran covered the region from the Pacific ...

  9. Eighth grade - Wikipedia

    en.wikipedia.org/wiki/Eighth_grade

    In India, 8th grade is the last grade before high school. 8th grade exam is the second last year the respective school will be setting the examination.In India, 8th class education falls under the middle education system and the curriculum for 8th grade students typically includes subjects such as mathematics, science, social studies, languages and elective subjects.