CONTRAST: Identify three ways a biologist’s research is different from an astronomer’s.

A biologist commonly uses microscopes to study small structures, while an astronomer uses telescopes to observe objects in space. Biologists research living organisms; astronomers study celestial objects rather than living organisms. Biologists generally study life on Earth, whereas astronomers investigate stars, planets, and other celestial bodies. Both fields can use computer models, so choice C is not a difference.

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