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What's In Your Breath?
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In this activity, learners test to see if carbon dioxide is present in the air we breathe in and out by using a detector made from red cabbage.
The Water Cycle
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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.
Battling for Oxygen
Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.