1. Hydrological hazard – Flood
  2. Geophysical hazard – Earthquake
  3. Climatological hazard – Drought
  4. Biological hazard – Tsunami
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1 Answers

Option 4 : Biological hazard – Tsunami

A natural hazard is a natural phenomenon that might hurt humans and other animals or the environment.
  • A natural disaster is a major adverse event resulting from natural processes of the Earth;
  • Examples include firestorms, dust storms, floods, hurricanes, tornadoes, volcanic eruptions, earthquakes, tsunamis, storms, and other geologic processes.

  1. Hydrological hazards are defined as extreme events associated with water occurrence, movement, and distribution, hydrological hazards include droughts and flooding and related events (e.g., landslides and river scour and deposition).
  2. Geological or geophysical hazards originate from internal earth processes. Examples are earthquakes, volcanic activity and emissions, and related geophysical processes such as mass movements, landslides, rockslides, the surface collapses, and debris or mudflows.
  3. Climatological hazards are a hazard caused by long-lived, meso- to macro-scale atmospheric processes ranging from intra-seasonal to multi-decadal climate variability.

Mistake Points

  1. Biological hazards, also known as biohazards, refer to biological substances that pose a threat to the health of living organisms, primarily humans. This can include medical waste or samples of a microorganism, viruses, or toxins (from a biological source) that can affect human health.

Hence, Tsunami is a Hydrological hazard and not a biological hazard.

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