What Are the Major Natural Sources of Potassium Used by Plants

question 37

Multiple Choice

What are the major natural sources of potassium used by plants?

• A)It is extracted from rocks.
• B)It is formed by atmospheric reaction of potassium and oxygen during lightning strikes.
• C)It is extracted from seawater by specialized bacteria in phytoplankton.
• D)all of the above
• E)only A and B

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