on september 25 2003 an earthquake that measuered 7.4 on the richter scale shook hokkaido, Japan. How much energy (joules) did the earthquake emite

The point where two air masses meet is called a

Southeast asia relies on its many because of the volcanic, mountainous terrain. a. highways c. rivers b. airports d. lakes

What evidence supports geological processes changing the surface of the earth? cutting down forests creates a decrease of habitats. tectonic plates uplift the rocky crust of earth to form mountains. competition in ecosystems creates a decrease in diversity. pollution runoff contaminates a lake.