:) i only left the 3 possible answers "if all answers are correct i will choose you brainiest" you in advanced! 1.     which of the following is not a type of plate boundary? a. convergent b. tectonic c. divergent 6.     which of the following represents units of geologic time in increasing order? a. era, eon, period, epoch b. epoch, period, eon, era c. epoch, period, era, eon 7.     which type of seismic wave generally causes the most damage? a. surface wave b. primary wave c. secondary wave 8.     the largest mass extinction in earth's history occurred at the end of which era? a. triassic b. paleozoic c. mesozoic 9.     which of the following statements about earthquakes is false? a. the deepest earthquakes occur along convergent plate boundaries. b. the epicenter of an earthquake is located on earth's surface directly above the focus. c. earthquakes cannot occur along transform plate boundaries. 10.     basalt, formed from magma, contains iron-rich minerals. why is this important? a. iron is magnetic and it triggers the reversal of earth's magnetic field. b. iron is magnetic and records the orientation and direction of earth's magnetic field. c. iron is one of most abundant elements and can be found on every continent. 11.     what can directly lead to unconformity on an exposed rock? a. lateral continuity b. erosion c. climate change 13.     which of the following is not a force causing plate motion? a. ridge push b. slab pull c. gravity 16.     dinosaurs became extinct due to the a. breakup of pangaea. b. cretaceous extinction event. c. permian extinction event.