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The cryosphere is those portions of Earth's surface where water is in solid form, including sea ice, lake ice, river ice, snow cover, glaciers, ice caps, ice sheets, and frozen ground (which includes permafrost).
Added 11/10/2016 6:29:57 PM
This answer has been confirmed as correct and helpful.
Confirmed by
vchutkan [11/10/2016 8:03:36 PM]