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Use this lesson to see how animals can have very interesting relationships. Some help each other, some benefit from others, and some hurt others. Young scientists are sure to benefit from this eye-opening lesson.

Use this lesson to teach your students how the different parts of a brain are responsible for any act they do. This lesson will teach your students how a 3.5 pound organ controls a grown human being!

Show your students the parts that work together to make a person breath! Have them compare the lungs of a healthy person, the lungs of a smoker, the lungs of a city resident, and the lungs of a miner.