Final answer:
El Nino conditions in the East Pacific lead to warm water, reduced upwelling, and lower thermocline, affecting marine life.
Explanation:
During El Nino, the water column on the East Pacific experiences various changes. Some of these include warm water replacing nutrient-rich cold water, reduced upwelling, and lower thermocline. The warm water deepens the thermocline, preventing upwelling and impacting marine life.
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