Which action is harmful to organisms living in water ecosystems? turning off faucets recycling trash not wasting water littering streams

The correct answer is littering streams.

Explanation:

The litter on the streets, sidewalks, or another kind of open regions may get carried by melting snow and rainwater to the storm drains. The smaller things like pesticides and motor oil may flow into the storm drains, and then eventually to lakes, rivers, and streams.  

The deposition of litter in the water bodies may harm aquatic life, the animals may ingest toxic constituents like pesticides and motor oil. The fertilizers that are dumped into the streams can result in huge algal blooms, which may obstruct oxygen supply and kill fishes in large numbers.  

 The correct answer is:  [D]:

                   →   " littering in streams " .

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