Question

Which of the following does not occur during El Nino? a.there is a low pressure cell in the eastern Pacific b.there is a high pressure cell in the western pacific c.warm surface water is moved across the Pacific from the western Pacific to eastern Pacific d. a nutrient rich upwelling current occurs along the coast of South America

Answer 1

During El Niño, the usual nutrient-rich upwelling along the South American coast does not occur due to disrupted water movements, which is different from other periods when upwelling supports marine life by bringing deep, nutrient-rich waters to the surface.

Step-by-step explanation:

During El Niño, a few key environmental changes occur affecting oceanic and weather patterns. One of these changes is that there is a high air pressure cell in the western Pacific and a low pressure cell in the eastern Pacific. Additionally, warm surface water is moved from the western Pacific to the eastern Pacific. However, during El Niño, the upwelling of cold, nutrient-rich water along the South American coast is disrupted. This upwelling is crucial for maintaining the high productivity and nutrient levels of these waters, and its absence can have negative effects on marine life and local fisheries.

Answer 2

d).a nutrient rich upwelling current occurs along the coast of South America

Step-by-step explanation:

El nino : El Nino occurs in Pacific region which produces global effect on weather patterns. It is climatic cycle and it occurs when warm waters in Western pacific oceans shifts towards the east of the coastal region of South America.

A nutrient rich upwelling current occurs along the coast of South America because the thermocline prevents the quantity of nutrients coming from the ocean surface by upwelling process along the coastal region of South America.