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.

d. murder of a son and cooking the son for a feast

procne murdered her son and served him to tereus, her husband and her son's father. she did this out of revenge. tereus raped her sister, philomela, and cut her tongue out to keep her from talking. philomela managed to communicate it to procne and procne sought revenge.

tantalus murdered his son and fed him to the gods because he was angry with the gods. the gods punished him by putting him in a pool of water that evaporates when he tries to drink and having fruit hang just out of his reach.

lemme actually be useful and say i believe the answer is the first one.