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#science
#evolution
#biology
#melanism
#pigment
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#peppered moth
#industry
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#the earth story
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#ozone layer
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#rachel carson
#silent spring
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#the earth story
#pesticide
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#silent spring
#peregrine falcon
#science
#environment
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#bioaccumulation
#animal
#the earth story
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#rachel carson
#silent spring
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#atmosphere
#the earth story
#canada
#tar sands
#bitumen
#greenhouse gas
#pollution
#carbon
#climate change
#geoloty
#the earth story
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