The age of rock is calulated on the basis of
The age of rock is calulated on the basis of
- A
Types of fossils present
- B
Number of strata present
- C
Amount of uranium present
- D
Amount of lead present
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An evolutionary trend in which there is general degeneration and loss of organs is
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Which of the following is not a vestigial organ?
Which of the following is not a vestigial organ?
Age of fossils in the past was generally determined by radio-carbon method and other methods involving radioactive elements found in the rocks. More precise methods, which were used recently and led to the revision of the evolutionary periods for different groups of organisms, includes
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Early atmosphere contained methane and other hydrocarbons. They have been now replaced by
Early atmosphere contained methane and other hydrocarbons. They have been now replaced by