Answer:
The answer is eutrophication
Step-by-step explanation:
Eutrophication is the process of pollution of bodies of water, such as rivers and lakes, which end up getting blurred with low levels of dissolved oxygen in the water. This causes the death of various animal and plant species, and has a very high impact on aquatic ecosystems.
These problems can directly or indirectly influence problems in the soil and air in the region.