Sea Water Is Oxygenated on the Deep-Sea Bottom Because

question 3

Multiple Choice

Sea water is oxygenated on the deep-sea bottom because

• A) Bottom sea water originates in shallow water in the tropics, where oxygen is abundant
• B) Wind mixes oxygenated water from the surface to the deep sea
• C) A small amount of photosynthesis occurs on the deep-sea bed
• D) Sea water in the deep sea originates at the surface in high latitudes

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