New Mexico NM-ASR Science Grade 8 Practice Questions - New Mexico Assessment Of Science Readiness - Science, Grade 8 Exam

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A fossil of an ancient whale has small hind limb bones, while modern whales have only tiny, unused pelvic bones. Which is the best explanation?

Over many generations, whales lost the use of hind limbs as they adapted to life in water, so the limb bones became reduced Whales grew new hind limbs over time The fossil is not related to modern whales The hind limbs were used for flying

Correct Answer:

Over many generations, whales lost the use of hind limbs as they adapted to life in water, so the limb bones became reduced

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