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Hair Plays Important Role In Keeping Elephants Cool
2012-10-11 19:23:21

Our ancestors and other species were pretty hairy. They had to be. Body hair on mammals has long been thought of as an evolutionary requirement for survival in cold climes that prehistoric man and the woolly mammoth inhabited.


Word of the Day
ecotone
  • A transitional zone between two communities containing the characteristic species of each.
The word 'ecotone' comes 'eco-' plus a Greek root meaning 'tension'.