Question

Dumping raw sewage into a river will reduce the amount of dissolved oxygen in the

water. What effect could dumping raw sewage most likely have on a river ecosystem?
O an increase in cellular respiration due to the rising level of phosphates in the water
O a decrease in water temperature due to the energy transfer from osmosis
O a decrease in aquatic animal populations
O an increase in fish populations

Answer 1

The first option "an increase in cellular respiration due to the rising level of phosphates in the water"

Step-by-step explanation:

hope this helps ;)