Antarctica And The Arctic: The Complete Encyclopedia
Antarctica and the Arctic: The Complete Encyclopedia
Antarctica has not always been a place of ice and snow. Once part of the supercontinent of Gondwanaland, it is believed to have enjoyed a warmer climate in which plants and land animals thrived. However, nowadays less than one percent of the surface is ice free, and at bedrock level the ice can be up to a million or more years old. In comparison, the Arctic consists entirely of pack-ice which breaks into ice floes in summer and floats on the Arctic Ocean.
Specifications of Antarctica and the Arctic: The Complete Encyclopedia
|Author||David McGonigal, Lynn Woodworth|
|Number Of Pages||608|
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