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| change of world |
Earth changes with the flow of time
Radioisotope dating of rocks and other methods show that the Earth was formed today about 460 million years ago. The first two changes that took place on earth during this period were- (1) changes in the earth's surface and (2) the origin and changes of the earth's atmosphere. The third change naturally due to these two changes is- (3) Change in the Earth's biosphere. These three changes are briefly described below.
