Some types of bacteria are extremely important in changing atmospheric nitrogen into a form of ____.
A) oxygen that is released into the atmosphere
B) carbon dioxide that speeds decomposition
C) carbon dioxide that aids in plant growth
D) soil nitrogen suitable for use by plants
E) nitroglycerine for uptake by plant roots
Correct Answer:
Verified
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Q21: In the Northern Hemisphere, north-facing slopes _.
A)will
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Q23: Caliche is a _.
A)layer of silica cement
Q24: A measure of hydrogen ion concentration is
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A)steep slopes where soils form
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Q30: Humus _.
A)is the material always comprising the
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