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Scientists In Protective Suits Collect Samples Of Water. People Analyze State Of Sea Or Ocean
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Nature Contaminated By Human Activity. Scientistscollect Samples Of Dirty Water On Coastline
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Scientist In Protective Suit Collects Samples Of Contaminated Water. Man Analyzes State Of Ocean
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Men Collect Water In Test Tube And Make Notes During Research Against Background Of Tropical Island
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Scientists In Protective Suits Collect Samples Of Contaminated Water. People Analyze State Of Ocean