1) How were areas in the Midwest and Southeast changing during the late 19th century?

the observed changes in the climate of the region. Extremes. • The frequency of cold waves in the Midwest has been very low since the  6 feet since the late 19th century.

Explanation:

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i believe it d) heterogeneous

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.