Which of the following is a likely root cause for the evolution of many short-lived cultures in the Great Plains, Great Basin, and interior Plateau areas?

Question

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The Great Plains, Great Basin, and interior Plateau areas are known to experience frequent and prolonged drought cycles, which could have put pressure on these cultures to adapt and evolve quickly in order to survive. Short-lived cultures may have been a result of these harsh environmental conditions.

Which of the Following Is a Likely Root Cause for the Evolution