Question

climate models for the united states predict
an increased frequency of droughts.
an increased frequency of extreme precipitation events.
increased variability and less predictability of the climate.
all of these are correct.

Explanation:

Climate change leads to more extreme weather patterns. Warmer air can hold more moisture, increasing the likelihood of extreme precipitation. Changes in atmospheric circulation can cause droughts. Also, climate systems become more complex and less predictable.

Answer:

All of these are correct.