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Acid Rain
Source Institutions
In this chemistry demonstration, acid rain is simulated in a petri dish.
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Rock Bottoms
Source Institutions
Learners add acid rain (nitric acid) to two cups that represent lakes. One cup contains limestone gravel and the other contains granite gravel.
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Burning Issues
Source Institutions
Learners use a candle to investigate the products of combustion. When a glass rod is held over a lit candle, the candle flame deposits carbon on the rod.
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Evolution as Reproduction with Variability
Source Institutions
In this online activity, learners discover how random variation influences biological evolution.
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Water Bugs
Source Institutions
Some bugs can walk on the surface of a lake, stream, river, pond or ocean.