Read the passage below and answer the question:
"Precision agriculture integrates multispectral drone imaging with automated soil moisture sensors. By mapping localized nutrient deficiencies across acreage in real time, farmers can apply variable-rate micro-dosing of fertilizer, curtailing nitrogen leaching into local watersheds by forty percent while cutting operational expenditure."
What is the main ecological benefit of precision agriculture highlighted in the text?
Answer and explanation
Correct answer: A. reducing nitrogen fertilizer runoff into surrounding aquatic watersheds
- Step 1: Identify the explicit environmental result: variable-rate micro-dosing curtails 'nitrogen leaching into local watersheds by forty percent'.
- Step 2: The primary ecological benefit is mitigating nitrogen runoff pollution in freshwater ecosystems.
Answer
reducing nitrogen fertilizer runoff into surrounding aquatic watersheds.
Why not the others: 'eliminating the necessity for any irrigation water in arid climates' is an unrealistic exaggeration; 'converting commercial monocultures into wild virgin rainforests' is untrue as farmland remains agricultural; 'accelerating the complete mechanization of food transport chains' relates to logistics, not the ecological watershed protection described.
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