Why Do Areas of Upwelling Tend to Have Large and Diverse

question 6

Multiple Choice

Why do areas of upwelling tend to have large and diverse populations of organisms?

• A) Upwelling lowers the level of oxygen in the water.
• B) Upwelling mixes deep- ocean fresh water with salt water from rivers.
• C) Upwelling brings aphotic organisms to the ocean surface.
• D) Upwelling brings nutrient- rich water up from the ocean depths.
• E) Upwelling moves dinoflagellates to the aphotic zone.