Describe the process of upwelling as it refers to magma under the ocean floor. Define subduction and explain that process. Draw the pattern of Earth’s major plates on a world map, and relate this...

Describe the process of upwelling as it refers to magma under the ocean floor. Define subduction and explain that process.

Draw the pattern of Earth’s major plates on a world map, and relate this pattern to the occurrence of earthquakes, volcanic activity, and hot spots.