Physics
Water boils at a lower temperature on the hills because

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

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Physics
Which is evidence that supports the dynamo theory?

Convection occurs in Earth's inner core
Earth's core contains a large amount of iron
Earth's outer core contains liquid that conducts electricity
Granite and basalt conduct electricity

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