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2010-08-03 08:21:01

Scientists track amphibian populations because these animals are sensitive to changes in their environment and can serve as “canaries in the coal mine” to give researchers early warnings about pollution or other ecological problems.


Word of the Day
sipe
  • a slit in a tire to drain away surface water and improve traction.
The word 'sipe' comes from Old English and is related to 'seep'.
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