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Some aquatic organisms live in open water, while some live in soil at the bottom of a body of water.

In this activity, learners explore and compare the buoyant properties of materials found in nature and in human-made materials.

In this activity, learners use found natural materials to create a water haven for bees and other insects.

Lakes, streams and other freshwater bodies are a habitat for lots of living things, big and small.

How do scientists measure how clear or murky water in a lake is? How does water clarity (clearness) affect what lives in the lake?