Human Geography is the study of

Human geography is the study of human influence by the earth or human activity that affects the Earth.

For example, human beings throwing trash in the oceans affects the Earth.

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i believe you meant to say air rather than hair so the answer is below ")

the dead sea, the lowest place on earth at 430 metres (1,410 ft) below sea level, has a correspondingly high typical atmospheric pressure of 1065 hpa.