Question

please explain this.......​

Answer 1

Answer:

✷Sulfur dioxide, a reducing agent found in urban air, might be expected to react with the oxidizing atmosphere produced by photochemical smog..

✷The most common cause of blue baby syndrome is water contaminated with nitrates...

✷Phosphates are chemicals containing the element phosphorous, and they affect water quality by causing excessive growth of algae...

Thus, the biochemical oxygen demand (BOD) of the water tends to increase where algal blooms are present.....

✷ therefore we can say all the following match correctly and the correct option will b (4)☜

hope this helps u ✌️☺️