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What is the theory which explains how
mammals wound up living in the oceans?
A. They migrated gradually from land.
B. They evolved from fish.
C. Aquatic dinosaurs became present day whales.

Answer :

Barnabusbengo

Answer:

B. They evolved from fish

Explanation:

most land dinos couldn't de-evolve into fish so They didn't migrate gradually from land and all Aquatic dinosaurs became extinct

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