Why does survival of aquatic life in river containing acidic water become difficult
Answers
Answer: Acid rain water, if mixed with river water, lowers its pH below 5.6, i.e., makes river water acidic. ... That's why flow of acid rain water to river makes the survival of aquatic life in the river difficult.
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Answer:
• The survival of aquatic life in rivers containing acidic water is difficult because it interferes with the life of phytoplankton which forms the base of aquatic food cycle.
Explanation:
• The increase in the acidity of the aquatic bodies is measured by pH scale. Most of the aquatic bodies have the pH value around 6-8, but in acidic water it can drop as low as 4-5.
• This drop in pH is caused by passing of raw sewage, agriculture run off, acid rain, etc.
• It foremost effect is seen in destruction of phytoplankton in the water. It is destroyed and since it is the base of the aquatic food chain, the entire food chain of that aquatic body is affected.
• The higher acidic concentration in the aquatic bodies is seen to hinder the reproductive ability of the fishes.
• The calcium levels in the fishes are reduced to such an extent that they are unable to produce eggs.
• It also damages the gills of the fishes, and are known to have killed the larvae of various small invertebrates present in the aquatic body.
• It also causes cloggation of the gills of the fish and they can die due to the lack of oxygen, also causes stunted growth of the fishes.