eutrophication is caused when the environment becomes enriched with nutrients. this causes problems for the marine habitats such as lakes as it can cause algal blooms. the process of how algal bloom is formed is written below:
- farmers often uses fetilisers for their crops, and sometimes this fertilisers might run-off into nearby water bodies, which increases the nutrient level of the water.
- this causes phytoplankton to grow and reproduce more faster, which result to the form of algal blooms.
- this algae may use up all the oxygen and may leave none for the other marine lifes which requires oxygen in the water to live.
- as they become to spread, they would cover the surface of the water, blocking aquatic plants under the algae to take in sunlight for photosynthesis.
- some algae may produce poisonous subatances risking the stake of harming higher forms of life. this can cause problems for the food chain and affect any animal that consumes them.
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