Answer:
A glacier is a river of ice that moves downwards from high mountains
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Explanation: At latitude 0° (the Equator) day length will be approximately 12 hours. Areas on the Equator have a constant 12 hours of daylight all year round. As latitude increases to 80° (polar circles - north or south), day length can be seen to increase to 24 hours or decrease to zero (depending on the time of year).
I'm pretty sure that it's A, a little higher because most of the lava runs down the sides of the volcano.