# 题目内容

According to the passage, which of the following occurs as a result of cooling in the upper layers of the ocean?
• AThe concentration of oxygen in the air above the oceans surface decreases.
• BThe concentration of DMS in the air above the oceans surface increases.
• CThe nutrient supply at the surface of the ocean is replenished.
• DCloud formation increases over the ocean.
• EMarine algae make more efficient use of nutrients.

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