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In this laboratory experiment, learners explore how effectively different sunscreens protect yeast cells from damage caused by ultraviolet (UV) radiation.

Over $20 per group Ages 8 - adult 1 to 2 hours
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In this activity, learners will discover how the thin layers of amphibians' skin allow water and other chemicals to pass through it.

$1 - $5 per group Ages 6 - adult 1 to 7 days