Control the U.S. Debt! Neither the president nor Congress appears to be near a solution on how to control the U.S. debt. Use this <a href="http://www.learner.org/series/econusa/interactivelabs/control-the-us-debt/">interactive</a> to show them how to do it.
Use clues about volcanoes to find out where they're located
Using clues about their behavior, history, and
appearance, try to locate where on the globe these volcanoes
are found. You can use what you know about the different plate
boundaries and the types of eruptions that usually occur at
them to help you.
To begin, choose one of the case studies below the map on
the right. If you want, you can read more about plate
boundaries before you begin.