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Apply: natural selection and adaptation

NGSS.HS: HS‑LS4‑3, HS‑LS4‑4, HS‑LS4.C.2

Problem

A scientist claims that the strong, sharp spines of the green sea urchin (Lytechinus variegatus) are an adaptation that has resulted from natural selection.
Which of the following observations provide support for the scientist’s claim?
Choose 2 answers:
Choose 2 answers:
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Stuck?