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In a Major Upwelling Region in the Eastern Equatorial Pacific

Question 113

Multiple Choice

In a major upwelling region in the eastern equatorial Pacific Ocean, nutrient availability tends to be relatively high, compared with other parts of the ocean.Shortly after an upwelling event, nutrients including nitrogen, carbon, and phosphorus increased, and the region had a short-term phytoplankton bloom.The bloom then stopped until an iron compound was added artificially.This indicates that the region was limited by


A) nitrogen.
B) phosphorus.
C) iron.
D) carbon dioxide.
E) sulfur.

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