Submarine Canyon
Submarine Canyon's are steep-sided valley canyons cut into the seabed of the continental slope.
I think is full moon and new moon
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As a result, the climatological community has defined four types of drought: 1) meteorological drought, 2) hydrological drought, 3) agricultural drought, and 4) socioeconomic drought. Meteorological drought happens when dry weather patterns dominate an area. ... Agricultural drought happens when crops become affected.
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