6. Vinegar is a weak acid. The most likely pH for a sample of vinegar is a. 1.5. b. 5.5. C 8.5.
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The hypothesis that eukaryotic cells evolved from a symbiotic<span> association of prokaryotes—endosymbiosis—is particularly well supported by studies of mitochondria and chloroplasts, which are thought to have evolved from bacteria living in large cells.</span>
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