Scientists Say: Eutrophication
This process can occur when extra nutrients enter a body of water
![Scientists Say: Eutrophication. When too much plant food goes bad.](https://www.snexplores.org/wp-content/uploads/2019/11/860-header-sci-say-eutrophication.jpg)
This canal may look lovely, but all that green algae blooming on the surface is a sign of eutrophication, which could eventually suffocate any animals living below.
Sahehco/Wikimedia Commons (CC BY-SA 3.0)