Write the answers to the following questions in complete sentences on a piece of paper. Use the page titles located directly under the questions to move your way through the lesson to locate the answers. When you finish the questions click on the Earth icon to return the program to the beginning.

  1. In your own words explain what happens at a subduction zone.

  2. In your own words explain what happens at a mid-ocean ridge.

  3. At a subduction zone what causes magma to rise?
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