Physics
Water boils at a lower temperature on the hills because

It is cold on the hills
There is less carbon dioxide on the hills
There is a decrease in air pressure on the hills
There is less oxygen

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Physics
The term ''equinox' means

The time when the Sun seems to be going round and round in the sky in the Arctic but does not go below the horizon
The path which the Earthtakes around the Sun
When the day and night are of equal duration
The axis of the Earth around which it rotates

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