Question

question 1 (multiple choice worth 3 points) (mc) during coastal upwelling, nutrient - rich water rises from the ocean floor to the surface to replace water that has been blown away or moved by currents. how would this most likely change the abiotic components of the ecosystem near the surface where the upwelling is taking place? increase in temperature decrease in oxygen content increase in competition for resources decrease in species diversity

Explanation:

• Coastal upwelling brings nutrient - rich water from the ocean floor. The water from the ocean floor is usually cooler, so it won't cause an increase in temperature.
• Nutrient - rich water can support more life. More organisms (biotic components) may consume oxygen, but the question asks about abiotic components.
• Increase in competition for resources is a biotic interaction (biotic component change).
• The nutrient - rich water can support more life. But if we consider the immediate abiotic change, the water from the ocean floor has lower oxygen content compared to surface water (due to less mixing with air at the ocean floor).

Answer:

Decrease in oxygen content