As Hawaiian Lava Flows Age Over 4 Million Years

question 5

Multiple Choice

As Hawaiian lava flows age over 4 million years,

• A) total soil phosphorous levels decrease.
• B) total soil phosphorous levels increase.
• C) total soil phosphorous stays about the same, but more phosphorous becomes refractory.
• D) total soil phosphorous stays about the same, but more phosphorous becomes weatherable.
• E) phosphorous limitation of primary production becomes less important.

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