I think it is A, hope this helped.
Answer: Jupiter, Uranus, Saturn, Neptune....
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Friction and Tectonic
Chemical Weathering
Physical Weathering
Wind and Water Erosion
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http://classroom.synonym.com/natural-activities-work-break-down-rock-16920.html
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Answer: A. the mid-ocean ridges
Explanation:
The features that form the longest mountain range on Earth is the mid-ocean ridges and spans about 40,389 miles around the earth.
The mid-ocean ridge has about 90% of its system under the ocean. They are formed as a result of the movement of tectonic plates.
