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Mercury in the Environment
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In this environmental science lesson, learners will examine the dangers of mercury and how humans contribute to growing mercury emissions on Earth.
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-901.jpg?itok=YuRaIPDM)
Underwater ROV
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In this online Flash game, learners will explore a coral reef using an underwater remotely operated vehicle (ROV).
![](/sites/default/files/styles/square_100/public/resource_images/smile-000-000-001-859.jpg?itok=p-HNUdOh)
Cartesian Diver
Source Institutions
In this quick activity (page 1 of the PDF under SciGirls Activity: California Fish), learners will build a simple Cartesian Diver in an empty 2-liter bottle.