The beaches at a nearby lake have been closed because of high E. coli counts. The lake is surrounded by agricultural areas and summer cottages. We know that different species of vertebrates have different E. coli strains in their digestive tracts. What represents a hypothesis for the source of the high E. coli counts?
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Explain how scientists use geologic time to determine the age of landforms.
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The cell membrane controls what enters and leaves the cell. which of the structures in the diagram below is the cell membrane? — f оооо
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The beaches at a nearby lake have been closed because of high E. coli counts. The lake is surrounded...
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