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In this online activity, learners discover how random variation influences biological evolution.

free Ages 14 - adult 5 to 10 minutes
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In this activity (p.5-6 of PDF), learners investigate natural selection. Learners discover that natural selection, which takes place over decades, can lead to altered populations within a species.

$5 - $10 per group Ages 8 - 11 10 to 30 minutes