What are the dangers of eutrophication?

Answer 1

The dangers of eutrophication are that once the nutrient levels of the water go up the algae will grow and reproduce extremely fast, causing a bloom of algae so-to-say. When this happens the algae will sometimes use all the oxygen in the water therefore suffocating other marine organisms. Another danger is that the bloom of algae (depending how big it is) can sometimes block sunlight from marine plants below the surface that depend on it for photosynthesis. Yet another danger posed by eutrophication is that certain types of algae are toxic and will harm higher forms of life if ingested, and this would cause problems for any other animal that feed on an animal that had eaten the toxic algae.

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