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Question

A period of the earth's geological history, about 55 million years old, is called __________.

A
The primary age
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B
The secondary age
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C
The tertiary age
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D
None of these
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Solution

The correct option is A The primary age
In the earth's ecological history time period which is about 55 million years old was called the primary age.
It is estimated that during this period only the climate event started. during this time configuration of oceans and continents was also different.

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