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Frog Call Quiz Learn the breeding calls of frogs and toads in the eastern United States and Canada. ↑ Return to Top ↑ Birds Dendroica: An Aid to Identifying North American Birds Multiple photos and sounds for most bird species in North America. The site includes coloring pages, games, and summaries of different animal species. Bigger Faults Make Bigger Earthquakes Use string or rope to demonstrate relationships between the length of a fault and the earthquakes that occur along it. View a 3-D Animation of Mount St. Helens following the 1980 eruption. Living with a Volcano in your Backyard Activities address volcanic processes and hazards, community safety, and the impact of volcanoes on our culture and history.

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