5. Coastal upwelling is important to California coastal ecology because ?   it brings necessary oxygen to the surface of the ocean, making it available to the photosynthetic organisms of the photic zone. it decreases the productivity in the areas it happens. it brings rich nutrients to the surface of the water, making them available to the photosynthetic organisms at the surface. it causes el Niño, which can be devastating to fisheries along the coast of California.

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Ecological adaptations

An ecological adaptation is any morphological, physiological, or behavioral trait of an organism that allows it to survive and reproduce in a habitat or ecosystem. Adaptation is a biological mechanism by which an organism gradually gets more acclimated to its surroundings.