Which characteristics describe a spiral galaxy? Check all that apply.
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Most spiral galaxies contain a central bulge surrounded by a flat, rotating disk of stars. The bulge in the center is made up of older, dimmer stars, and is thought to contain a supermassive black hole. Approximately two-thirds of spiral galaxies also contain a bar structure through their center, as does the Milky Way
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My question involves macromolecules. My question tries to figure out what the mystery food sample is. My question is open-ended: it can't be answered yes or no
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