Hypoxic waters kill high levels of aquatic species, disrupting the food chain and habitat. In addition to wrecking ecological havoc, the dead zone can be a financial drain on coastal communities.
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Mixtures can be physically separated by using methods that use differences in physical properties to separate the components of the mixture, such as evaporation, distillation, filtration and chromatography.
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Answer: they absorb photons from sunlight.
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