Brown - Brown in Nature

Brown in Nature

Mammals

  • The brown rat or Norwegian rat (Rattus norvegicus) is one of the best known and most common rats.
  • The brown bear (Ursus arctos) is a large bear distributed across much of northern Eurasia and North America.

Biology

  • The solid waste excreted by human beings and many other animals is characteristically brown in color due to the presence of bilirubin, a by-product of destruction of red blood cells.

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Famous quotes containing the words brown and/or nature:

    “Old man, it’s four flights up and for what?
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    “Our nature consists in motion; complete rest is death.”
    —Blaise Pascal (1623–1662)