The density wave theory suggests that the spiral arms of the Milky Way Galaxy are the result of a Spiral Density Wave moving around the Galaxy.
According to the geographical findings, the correct answer at which the global wind belts and their directions in order from the Equator to the North Pole are the following:
Trade winds, east to west; this is the type of winds that blow from around south and north of the equator. This type of wind assists the ships in traveling west, and they can also shape the storms like hurricanes.
Westerlies, west to east; this is known as westerly wind due to its direction. It usually occurs in two regions on Earth. It is around 30 and 60 degrees latitude in the northern hemisphere and around 30 and 60 degrees latitude in the southern hemisphere.
Polar Easterlies, east to west: this is a type of wind that blows from the East to the West. It moves from high-pressure areas near the poles toward the low-pressure areas.
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Rivers moves sediment and erodes rock
