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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 outdoor, sunny day activity, learners experiment with paper leaf models to discover how some desert plants conserve water.

This online simulation game explores the different consequences of water levels on the Columbia River in the Pacific Northwest.

In this astrobiology activity (on page 11 of the PDF), learners consider what organisms need in order to live (water, nutrients, and energy).

In this outdoor activity/field trip, learners investigate the special shapes, holding structures and holding behaviors that real organisms use in streams, rivers, creeks or coast intertidal zones to a

When it rains, water can collect on top of and seep into the ground. Water can also run downhill, carrying soil and pollution with it.

Glare from the sun and ripples from the wind can make it hard to see what's below the surface of a body of water.

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