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REHS/RS NEHA Study Guide questions with correct answers

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When gas pipe is leaking, what methods would be used by the technician to identify the exact point of leakage? Answer Using soap bubble solution What is the graphic tool used by meteorologists to give a succinct view of how wind speed and direction are typically distributed at a particular location Answer Wind Rose What is the lowest portion of Earth's atmosphere called: Answer troposphere (a height of about 3.7-6.2 miles (6-10 km) What three viruses cause the largest number of known cases of illness through contaminated food: Answer Hepatitis, Rotavirus, Norovirus Shellfish poisoning is caused by a group of toxins produced by: Answer planktonic algae (dinoflagellates, in most cases) What is the most widely accepted detection method for the saxitoxins (Paralytic Shellfish Poisoning) around the world: Answer mouse bioassay (not as useful in Diarrhetic Shellfish Poisoning or Neurotoxic Shellfish Poisoning)


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