A natural phenomenon is an observable event which is not man-made. Examples include: sunrise, weather, fog, thunder, tornadoes; biological processes, decomposition, germination; physical processes, wave propagation, erosion; tidal flow, and natural disasters such as electromagnetic pulses, volcanic eruptions, hurricanes and earthquakes.[1][2]
- ^ Missy Allen; Michel Peissel (1993). Dangerous Natural Phenomena. Chelsea House. ISBN 079101794X.
- ^ William R. Corliss (1977). Handbook of unusual natural phenomena. Sourcebook Project. ISBN 0915554011.
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