Q: What causes eutrophication to occur?


Read this paragraph and choose the correct option from the provided answers:

Fertilizer in runoff leads to algal blooms and dead zones in bodies of water. This type of pollution is called nonpoint-source pollution. Point-source pollution includes waste water from factories and sewage treatment plants. Hot water discharge causes thermal pollution.

 Choices:

- excess of decreased and other nutrients

- excess of carbonate and other nutrients

- excess of increased and other nutrients

- excess of fertilizers and other nutrients


A:
excess of fertilizers and other nutrients