Pull of tectonic plate slab is responsible for higher spreading rate pf mid ocean ridge.
The East Pacific Rise is considered as a fast spreading center that spreads about 3-6 inches every year as compared to Mid-Atlantic Ridge that spreads 1-2 inches every year.
Tectonic plate slab pulls at subduction zones is responsible for the faster rate of spreading. That region experiences high spreading rate where more tectonic plate slab pull occurs.
If more pull of tectonic plate slab occurs at right side of the mid ocean ridge so it means that the spreading rate is higher at right side of the mid ocean ridge so we can conclude that pull of tectonic plate slab is responsible for higher spreading rate.
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