Biology Quiz
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BIOLOGICAL EVOLUTION: UNITY AND DIVERSITY
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Fossils from a horse lineage show changes in average shoulder height over millions of years.
Time (million years ago): 50, 40, 30, 20, 10, 0 (present)
Average shoulder height (m): 0.45, 0.62, 0.88, 1.15, 1.38, 1.50
Which interpretation best matches the trend in the fossil data?
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