NPP Is Generally Lower at 25° Latitude Than It Is

question 18

Multiple Choice

NPP is generally lower at 25° latitude than it is 10° closer to the equator or 10° closer to the poles. What is the best explanation for this phenomenon?

• A) Descending Hadley cells disrupt the ability of plants to acquire carbon dioxide.
• B) It is much drier at this latitude.
• C) This latitude corresponds with high concentrations of upwelling zones.
• D) Decomposition rates are particularly high at this latitude.

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