Answer: B. If the level of fecal coliform bacteria is low, then the water may still be unsafe because of the presence of other pathogens.
Explanation:
Fecal coliforms are anaerobic bacteria originating from the intestine of humans. They contaminate drinking water via poor sewage disposal or leaky sewage systems.
Scientists believe that fecal coliforms are not harmful, however they form a basis for the analysis of water quality because the presence of fecal coliforms in a water body is often an indication of the presence of some disease causing bacteria such as typhoid and dysentery causing microbes.
Answer:
DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal investigation. A DNA sample taken from a crime scene is compared with a DNA sample from a suspect. If the two DNA profiles are a match, then the evidence came from that suspect.
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The water table is an underground boundary between the soil surface and the area where groundwater saturates spaces between sediments and cracks in rock. Hope this helps!!!!!!