Drastic changes in the climate of a region over long periods of time in earth's history are likely due to

Drastic changes in the climate of a region over long periods of time in Earth's history are likely due to plate tectonics.
One example: collisions between landmasses cause mountains to arise, and they can form rain shadows ( blocking rain clouds )

Aregion is an area of land that has common features. these features can be natural, such as climate or landscape. they can also be artificial, such as language or religion. the xinjiang uyghur autonomous region, above, is an area of china inhabited by uyghurs, a muslim group with ethnic ties to turkish people.

The correct answer is kettles.