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Cette carte conceptuelle, cree avec IHMC CmapTools, contient des informations liees a : Polar Caps, Polar Caps include Permanent Caps, Dunes and Layered Sedimentary Deposits contain evidence about Periodic Changes in Orbit, Seasonal Caps form in High Latitudes, Cold Traps for Volatiles, Water Ice (& CO2 Ice?) is Kilometers Thick, Permanent Caps include Northern Cap, CO2 & Water Vapor into Atmosphere, Seasonal Caps retreat in Spring & Summer, Seasonal Caps are made of Tiny Amount of Water Ice, Permanent Caps are Major Repository of CO2 & H2O, Autumn & Winter together lead to Absence of Sunlight at Surface, Temperatures fall to Condensation Point of CO2 (about 150K) causes Atmosphere, Permanent Caps act as Cold Traps, Major Repository of CO2 & H2O may release CO2 & Water Vapor, CO2 in form of Dry Ice, CO2 is principal component of Atmosphere, CO2 Ice & Water Ice is Kilometers Thick, Permanent Caps include Southern Cap, Periodic Changes in Orbit change quantity of Sunlight falling on Polar Caps, Absence of Sunlight at Surface hence Temperatures fall to Condensation Point of CO2 (about 150K)