Biology 11: Immune System and Disease Worksheets

Coliform Organism - Microorganisms found in the intestinal tract of humans and animals. Their presence in water indicates fecal pollution and potentially adverse contamination by pathogens. Colloids - Very small, less than 1 mm, finely divided solids (that do not dissolve) that remain dispersed in a liquid for a long time due to their small ... ................
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