Recent studies indicate that the addition of iron to areas of the ocean could increase productivity. Increased productivity could be beneficial for many reasons. What may be one of the LARGEST negative impacts that could occur with "fertilizing the oceans with iron"?
A)Increased productivity would provide more biomass for subsequent levels on the trophic pyramid.
B)Increased productivity could result in higher respiration rates and regions of depleted oxygen in the ocean.
C)Increased productivity would be matched by increased detritus falling to the ocean floor, burying many deep-sea organisms.
D)Increased productivity could result in depletion of nitrogen available in ocean waters.

Question

Quizplus · Accepted Answer

While adding iron to the ocean may increase productivity and benefit certain organisms, it could also lead to higher respiration rates and the development of regions with depleted oxygen in the water. This could have devastating effects on ecosystems and harm many species that rely on oxygen to survive.

Recent Studies Indicate That the Addition of Iron to Areas