What are the two basic approaches in geography ​

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Explanation:

The systematic approach organizes geographical knowledge into individual categories that are studied on a worldwide basis; the regional approach integrates the results of the systematic method and studies the interrelationships of the different categories while focusing on a particular area of the earth;

question

which are human systems?

the amazon rain forest

the appalachian trail

the george washington bridge

the himalayas

the hoover dam

the north american free trade agreement