Question

why does water on earth become dirty​

Answer 1

Answer:

When the algae die and decay, this uses up much of the oxygen in the stream. Without enough oxygen in the water, invertebrates and fish will suffocate . Farming chemicals can cause algae to bloom. ... And this dirty water gets cycled back into the water system.

Answer 2

Answer:

When the algae die and decay, this uses up much of the oxygen in the stream. Without enough oxygen in the water, invertebrates and fish will suffocate . Farming chemicals can cause algae to bloom. ... And this dirty water gets cycled back into the water system.