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Introduction: earthquakes shake our planet every day. Often, the quakes cause little damage and no loss of life; but that is not always the situation. Understanding what is going on can make an earthquake a little less threatening. Also, today, we can construct homes that are likely to survive a moderate quake. Like other exercises, […]

Introduction: Volcanoes have affected Earth from the beginning and mountain building has been occurring since Earth time began. Both influence Earth: they affect the atmosphere, the temperature, oceans, and our life. I. Place the answers to the following sections on the lines along the left margin. A. The following statements are true or false. Place […]