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In the wild, small crustaceans known as brine shrimp live in marine habitats such as saltwater lakes.

This fun and simple hands-on astronomy activity illustrates the value of supernovae in the universe.

Learners mix vinegar and baking soda to produce a gas. With the addition of a bit of liquid soap, the gas becomes trapped in measurable bubbles.

Learners add calcium chloride to a baking soda solution and observe an increase in temperature along with the production of a gas and a white precipitate. These are all signs of a chemical reaction.