Which of the following statements is the best explanation for why the embryos look so similar, considering how different an adult fish and pig are? Fish and pigs both need gills. Fish and pigs are both mammals. Fish and pigs share a common ancestor.

specific gravity is the density of a substance divided by the density of water. since (at standard temperature and pressure) water has a density of 1 gram/cm3, and since all of the units cancel, specific gravity is usually very close to the same value as density

so "c" is the answer

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gold is my favorite solid.

i think its 100

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