The Cambrian rocks of Greenland, currently under an ice sheet, contain fossils of plants and animals now found in tropical areas.The Cambrian rocks of Greenland, currently under an ice sheet, contain fossils of plants and animals now found in tropical areas.The greatest reason for this surroundings change is that in the Cambrain Period,
1 the polar areas were much warmer.
2 tropical plants and animals of today developed from arctic plants and animals of the Cambrian.
3 the land area that is now Greenland was closer to the boundary between the northern and southern hemispheres during the Cambrian Period.
4 Cambrian of occuring in,or characteristic of the Tropics plants and animals could survive a wider range of climates than tropical plants and animals of today.
2007-03-25
06:37:23
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5 answers
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Anonymous