10

　　. Today, Cancún has more than 100 hotels and 500,000 permanent residents. Many work in the tourist industry that serves the millions of visitors who come each year from all over the world.

　　Physical and Human Geography

　　Physical geographers are sometimes called earth scientists. Some study such topics as geomorphology (地形学), that is, the study of how the shape of the Earth

　　11

　　. Others study weather and climate. Still others study water, the oceans, soils, or ecology. Jobs in these fields require

　　12

　　scientific training.

　　Some geographers study economic, political, and

　　13

　　issues as they relate to place or region. Human geographers are usually hired by government agencies to analyze a specific problem. These geographers work

　　14

　　with political scientists, economists, and sociologists.

　　Together, they provide possible solutions to problems from many different aspects of life in an area. And, of course, geographers teach the subject at all levels of

　　15

　　, from elementary schools to universities. But no matter what geography jobs people might hold, they are always trying to answer the basic geographic questions: “Where are things located?” and “Why are they there?”

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