What is a possible source of excess nutrients entering waterways?

A. Increased biodiversity surrounding the water
B. Thermal heat inflow from a power plant
C. Run-off from agricultural fields
D. Increased sunlight exposure



Answer :

Final answer:

Excessive nutrients from various sources like agriculture and sewage lead to eutrophication and negative effects on aquatic ecosystems.


Explanation:

Excessive nutrients entering waterways, such as nitrogen and phosphorus, primarily come from various sources:

  1. Run-off from agricultural fields carrying fertilizers
  2. Sewage treatment plants
  3. Excess nutrients applied to agricultural fields and home lawns

This leads to eutrophication, causing algal blooms, oxygen depletion, and detrimental impacts on aquatic ecosystems and biodiversity.


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