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This is a quick activity that shows how large amounts of rock and sediment are added to the edge of continents during subduction.

1 cent - $1 per student Ages 8 - 18 5 to 10 minutes
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Through discussion and hands-on experimentation, learners examine the geological (ancient) carbon cycle.

$1 - $5 per group Ages 11 - 14 45 to 60 minutes