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The ancestor of a whale and present-day whales share several key traits, including a similar skeletal structure that reflects their common mammalian lineage. Both possess adaptations for aquatic life, such as streamlined bodies and modified limbs that function as flippers. Additionally, they both breathe air through lungs and give live birth, characteristics that are fundamental to mammals. These similarities highlight the evolutionary transition from land-dwelling ancestors to fully aquatic whales.

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3mo ago

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