What role does the house of representative have in the impeachment process?

The United States Constitution grants the power of impeachment to the House of Representatives (Article I, Section 2, the Constitution reads, “The House of Representatives shall chuse [sic] their Speaker and other Officers; and shall have the sole Power of Impeachment.”). Bringing impeachment charges against federal officials is part of the House of Representative's investigatory and oversight responsibilities. Impeachment is defined as the act of removing a Government official due to crimes committed while said official was in office.

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there are isolated pockets of farming, generally around rivers and oases, which are used for irrigation.