Does anyone know the answers to "Otters play a vital role in ecology of rivers" on newsela?

The nutrients in this area are very important, so the ecosystem of the area is maintained.

Many of them are in charge of regulating the amounts of water, the growth of rivers in fluvial situations since with their burrows they are in charge of regulating water levels.

Explanation:

Furthermore, otters have a food chain that if they become extinct due to poaching or other reasons for human intervention, this chain breaks. The predator of this species will also be at risk of extinction and those foods that functioned as a food source for otters will begin to increase in population, thus generating an imbalance and a new ecosystem that could affect other species.