Question
Which one of the following would be an anthropogenic cause of eutrophication of a surface water body?
Group of answer choices
automobile emissions
acid rain
bioaccumulation of toxins
excess nutrients from fertilizer runoff
All of the above are anthropogenic causes of eutrophication.
Group of answer choices
automobile emissions
acid rain
bioaccumulation of toxins
excess nutrients from fertilizer runoff
All of the above are anthropogenic causes of eutrophication.
Answers
GPT-4o mini
The correct answer is **excess nutrients from fertilizer runoff**.
While all the options provided (automobile emissions, acid rain, bioaccumulation of toxins) may have anthropogenic sources and can impact environmental health, they do not directly cause eutrophication. Eutrophication specifically refers to the process where water bodies become enriched with nutrients (particularly nitrogen and phosphorus), leading to excessive growth of algae and changes in water quality. Excess nutrients from fertilizer runoff are a primary cause of this process.
Therefore, the option that directly relates to eutrophication is **excess nutrients from fertilizer runoff**.
While all the options provided (automobile emissions, acid rain, bioaccumulation of toxins) may have anthropogenic sources and can impact environmental health, they do not directly cause eutrophication. Eutrophication specifically refers to the process where water bodies become enriched with nutrients (particularly nitrogen and phosphorus), leading to excessive growth of algae and changes in water quality. Excess nutrients from fertilizer runoff are a primary cause of this process.
Therefore, the option that directly relates to eutrophication is **excess nutrients from fertilizer runoff**.