TOXIC ACCUMULATION IN WILDLIFE:
http://www.teachersdomain.org/asset/ipy07_vid_pcbfoodchain/
TOXIC ACCUMULATION IN HUMANS
http://www.teachersdomain.org/asset/ipy07_vid_arcticpcb/
FOR COCKROACH ASSIGNMENT, GO HERE:
ARCTIC HAZE:
http://www.teachersdomain.org/asset/ean08_vid_arctichaze/
CHANGING ARCTIC LANDSCAPE
http://www.teachersdomain.org/asset/ipy07_vid_arcticland/
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