Some People Have Suggested That Fertilizing the Oceans with Iron

Multiple Choice

Some people have suggested that fertilizing the oceans with iron would help combat the effects of global warming on oceans.However, it is unlikely that this method will be used extensively, because iron fertilization

A) does not affect the impacts of global warming on oceans.
B) causes more CO₂ to be dissolved in oceans.
C) increases photosynthesis, thereby decreasing dissolved CO₂.
D) would be very difficult to do on a large scale.
E) would be ineffective because its effects are indirect, not direct.