Why are temperatures cooler in the
northern hemisphere at this time?

Earth spins on an angle, so the Northern hemisphere is towards the sun in the summer, making it warmer and having the temperature increase, so the opposite of that is that in the winter, the Northern Hemisphere tilts away from the sun, making the temperatures decrease.

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Explanation:

answer

crater lake was formed when mount mazama produced a large eruption and collapsed to form a caldera, which then filled with water forming a lake.

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