Correct Answer:
Option D - A magnitude of 8-9 on the Richter scale means a destructive earthquake. The Richter magnitude scale is a scale of numbers used to tell the power (or magnitude) of earthquake. Charles Richter And Gutenberg developed the Richter Scale in 1935.
D. A magnitude of 8-9 on the Richter scale means a destructive earthquake. The Richter magnitude scale is a scale of numbers used to tell the power (or magnitude) of earthquake. Charles Richter And Gutenberg developed the Richter Scale in 1935.