English Language · English
Which conclusion about phosphorus on Earth is best supported if mining is required to obtain highly concentrated, accessible forms for fertilizer production?
- 1Although phosphorus is present throughout the planet's systems, only a very small portion becomes concentrated and accessible enough to mine and use in industrial agriculture.✓
- 2Phosphorus is both rare and absent from most environments, so mining accounts for almost all phosphorus in circulation.
- 3Mined phosphate already represents the absolute majority of Earth's total phosphorus stores.
- 4Because phosphorus is globally ubiquitous, mining is unnecessary and purely a historical error.
Correct answer
Although phosphorus is present throughout the planet's systems, only a very small portion becomes concentrated and accessible enough to mine and use in industrial agriculture.
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