El Niño can prevent upwelling along the Pacific Coast. What might happen if normal upwelling does not take place? Make predictions and support them with facts from the chapter.
It could result in a possible collapse of the ecosystem. Upwelling regions are the most productive and species rich areas in the world; in these ecosystems, every species present plays a vital role in the functioning of that ecosystem. If one species is significantly depleted, that will have an effect throughout the rest of the trophic levels.
