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In this activity, learners use a model for how fishing affects marine life populations, and will construct explanations for one of the reasons why fish populations are declining.

$5 - $10 per group Ages 8 - 14 30 to 45 minutes
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In this activity, learners take on the role of a carbon atom and record which reservoirs in the carbon cycle they visit.

$10 - $20 per group Ages 11 - 18 30 to 45 minutes