The main reason why Earth is warmer at the equator than at the North and South Poles are thats where the sunlight shines at a lot of times. The sunlight never really shines directly at the North and South Poles like it does with the equator.
Answer:
The Yellow Sea
The west coast of the peninsula is bordered by the Korea Bay to the north and the Yellow Sea and Korea Strait to the south; the east coast is bordered by the Sea of Japan.
Explanation:
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