1.) Determine the magnitude for an earthquake at 400 kilometers distance with a maximum amplitude of 0.5 mm?

2.) Determine the amplitude of the biggest waves for an earthquake at 40 kilometers distance with a magnitude of 3?

3.) what would the difference in time between the 5 waves and the P waves be for an earthquake with a magnitude of 3.5 and a maximum amplitude of 1 mm?

Based on the information in the graph, what can you conclude about humans in the world in general?

Which of the following statements best describes what is occurring in the land surrounding the sahara desert? a desertification is increasing, and the desert is expanding. b. fewer people are trying to farm in this semiarid region. c. the desert is shrinking with the increased use of irrigation. d. increased urbanization has resulted in decreased deforestation. select the best answer from the choices provided mark this and return save and exit next submit

Who developed the theory of plate tectonics?