Seas and rivers are physical features that are not caused by plate tectonics. The answer to this question is option C.
Plate tectonics is a concept in geography that teaches us about how land forms are created due to the movements that takes place in the Earth crust.
According to the concept, the plates glide over the mantle that covers the earth.
While options A, B and D are caused by plate tectonics, seas and rivers are not caused by it.
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