Where have all the Froggies Gone?
Dr.  Frogbert
      "Frog and toads are disappearing here," Dr. Frogbert said, "because there's too much UV radiation outside!  UV radiation is an invisible part of sunlight that causes sunburn and skin cancer in humans.  It hurts our eggs, and a lot of them die before they can hatch into tadpoles."
       Nermit was very sad to hear such a story.  "It's terrible,"  said Dr. Frogbert.  "But at least we don't have to worry about our homes being destroyed like frogs in California do." 
       "In California?!"  cried Nermit.  "Oh, no!  That's where I live!  I have to go back and see what's happening there!"
 
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For More Information/Background:

Oregon Frog Situation Background     UV Radiation

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