A. quartz B. orthoclase C. halite D. coal E. diamond 10. The correct answer in question 9 is not a mineral because A. it is not naturally occurring. B. it does not have a well defined chemical composition. D. it does not have a regular arrangement of its constituent atoms. E. all of the above.
Geologists study the Earth to A. locate energy and mineral resources.
B. determine what changes have occurred in the Earth's history. C. learn how to predict future geological events such as floods, earthquakes, volcanic eruptions, and ice ages. D. evaluate how living organisms, including Homo sapiens , have contributed to geological changes. E. all of the above. E. all of the above 13.