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← GeographyWhich outcome occurs when caldera-forming eruptions discharge tephra?
A)Igneous rock composition becomes more felsic
B)Nutrient runoff raises coastal plankton blooms✓
C)Air quality is temporarily increased
D)Regional groundwater recharge gets enhanced
💡 Explanation
Increased nutrient runoff raises coastal plankton booms. Tephra deposition contains nutrients leached by runoff waters due to weathering rather than changes in igneous rock, air quality enhancements, or direct groundwater alteration. This process names primary succession.
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