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An aurora is a natural phenomenon. 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 ...
The snowy rollers are a somewhat unusual weather phenomenon, said Megan Varcie, a meteorologist with the National Weather Service in White Lake, Mich. Rare snow doughnuts, a unique phenomenon ...
Rare events encompass natural phenomena (major earthquakes, tsunamis, hurricanes, floods, asteroid impacts, solar flares, etc.), anthropogenic hazards (warfare and related forms of violent conflict, acts of terrorism, industrial accidents, financial and commodity market crashes, etc.), as well as phenomena for which natural and anthropogenic ...
For example, when leaves alternate up a stem, one rotation of the spiral touches two leaves, so the pattern or ratio is 1/2. In hazel the ratio is 1/3; in apricot it is 2/5; in pear it is 3/8; in almond it is 5/13. [56] Animal behaviour can yield spirals; for example, acorn worms leave spiral fecal trails on the sea floor. [57]
Researchers said they named the new species “‘pyrrhos,’ meaning flame-colored, and ‘stiktos,’ meaning spotted, in reference to the coloration of the wings.”
The Mima Mounds Natural Area Preserve showcases another natural phenomena that have stumped scientists for decades. A series of dirt mounds up to seven feet high and 40 feet across, occurring in ...
An example of the distinction between a natural hazard and a disaster is that an earthquake is the hazard which caused the 1906 San Francisco earthquake disaster. A natural hazard [18] is a natural phenomenon that might have a negative effect on humans and other animals, or the environment.
A geological phenomenon is a phenomenon which is explained by or sheds light on the science of geology. Examples of geological phenomena are: Mineralogic phenomena; Lithologic phenomena Rock types. Igneous rock. Igneous formation processes; Sedimentary rock. Sedimentary formation processes (sedimentation) Quicksand; Metamorphic rock; Endogenic ...