19. Which of the following can be triggered by an earthquake? a. intense ground shaking c. tsunami b. landslide d. all of the above 20. In what direction do seismic waves carry the energy of an earthquake? a. away from the focus c toward the focus b. from the surface to the interior d. all of the above 21. Which of the following can trigger a tsunami? a. eruption of an oceanic volcano c. undersea landslides b. undersea earthquakes d. all of the above 21. Earthquakes generally occur at plate boundaries, where a magnetic pull is greatest C. stress on rocks is low b. stress on rocks is greatest d. the most rock is found​