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PLEASE HELP ILL MAKE YOU BRAINLIEST! Darwin suggested that evolution occurred at a steady, relatively slow rate. Today, scientists cite fossil evidence to support which revision of Darwin’s suggestion?
A. Evolution occurs slowly in the ocean and rapidly on land.
B. Evolution occurs slowly at the molecular level and rapidly at the organism level.
C. Evolution occurs slowly in some classes and rapidly in other classes.
D. Evolution may sometimes occur very rapidly, in any clade and at any time.

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The field of molecular evolution uses principles of evolutionary biology and population genetics to explain patterns in these changes.  

Some types of evidence, such as fossils and similarities between related living organisms, were used by Darwin to develop his theory of natural selection, and are still used today. Others, such as DNA testing, were not available in Darwin's time, but are used by scientists today to learn more about evolution.