Question

write this answer please​

Answer 1

Answer:

1. the trend is - deteriorating
2. it may be due to increasing population and more buildings
3. no proper maintenance and low hygiene
4. Oxygen depletion, or hypoxia, is a common consequence of eutrophication, both in fresh water and seawater. The direct effects of hypoxia include fish kills, especially the death of fish that need high levels of dissolved oxygen. Several algal species able of producing toxins harmful to human or marine life have been identified in European coastal waters.

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