A mineral soil contains less than 20 percent organic carbon while an organic soil contains at least that amount.
Correct Answer:
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Q15: Ionized ammonia applied to soil is effectively
Q16: Oxygen diffuses equally well through waterlogged soil
Q17: Fungi can be present at up to
Q18: Lignin degradation by basidiomycetes is an aerobic
Q19: Molecular techniques have shown that Cyanobacteria are
Q21: Which of the following statements is correct?
A)All
Q22: A major organism involved in associative nitrogen
Q23: The plant leaf surface is called the
Q24: Mycorrhizae are formed by the association of
Q25: The surface of a plant root is
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