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This lab activity is about toxic substances like pesticides and their effects on biological systems. The activity starts with an introduction of how birds sequester calcium to make an egg.

$10 - $20 per group Ages 14 - 18 1 to 7 days
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In this activity, learners will use cereal to conduct an experiment and investigate how decreased bone density is related to increased risk of bone fracture.

$5 - $10 per group Ages 8 - 18 1 to 2 hours