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Warm surface waters get depleted of nutrients and carbon dioxide, but they enrich again as they travel through ________ waters in the conveyor belt. The base of the world's food chain depends on the cool, nutrient-rich waters that support algae and seaweed. A deep B freshwater C saline D shallow

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Answer:

correct option is A deep

Explanation:

  • The conveyor belt begins at the sea surface near the pole in the North Atlantic. Here, water is cooled to Arctic temperatures. When sea ice is formed, the salt does not freeze and lags behind in the surrounding water.
  • Deep water moves south, between continents, below the equator, and to the ends of Africa and South America. The current flows along the Antarctica coast, where the water cools and sinks again like the Atlantic
  • They are abundant again when traveling deeper or lower layers through the conveyor belt

so correct option is A deep

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