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Did you know that the water we use today is the same water found on Earth millions of years ago? The Earth constantly uses and recycles water in a process called the water cycle.

$5 - $10 per group Ages 8 - 14 1 to 7 days
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In this chemistry activity, learners use common chemicals and metals to examine reactions that produce gaseous substances.

$1 - $5 per student Ages 11 - 18 5 to 10 minutes