Which outcome occurs when soil undergoes compaction around legume roots?

💡 Explanation

Compaction reduces root porosity, therefore hindering atmospheric nitrogen diffusion into specialized nodule structures occupied by nitrogen-fixing bacteria. Because the oxygen supply decreases, symbiotic nitrogen fixation via the nitrogenase enzyme decreases, rather than increasing nutrient uptake.

• Which process in arid plants minimizes water loss when high temperatures cause stomata to close?
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• Which physiological effect occurs in a freshwater fish when the distal tubule in its kidney malfunctions?
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