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Survival of an Organism in an Ecosystem

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Our planet recycles and reuses everything on it that is needed to support life. It is an amazing, giant recycling system called the biogeochemical cycle. You can actually model this on a small scale by using a plastic bottle and mud to build what is called a Winogradsky column. In this activity, you will build your own Winogradsky columns and investigate how including different nutrients can affect which soil microorganisms flourish and which fail.

Lesson Grade Level

6th Grade

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Grades: 6th Grade, 7th Grade, 8th Grade
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This is an 8-lesson unit that is designed to be used together to learn about the health and diversity of your local watershed by placing leaf packs into a water source (natural or man-made ponds