Question

Assertion (A): When acid rain flows into the river, it lowers the pH of the river water. Reason (R): The survival of aquatic life in such a river becomes difficult
​

Answer 1

Answer:

the assertion and reason both are true and assertion is a correct explaination of reason

Explanation: hope it helps plz mark as brainliest

Answer 2

The given Assertion (A): When acid rain flows into the river, it lowers the pH of the river water.

Reason (R): The survival of aquatic life in such a river becomes difficult.

Both the Assertion(A) and Reason(R) are correct. Reason(R) is the correct explanation for Assertion(A).

Acid rain is caused when the oxides of sulphur and nitrogen that is $SO_X$ and $NO_X$ are released into the air, these oxides can emit from any source which includes the burning of petroleum, fossil fuels, industrial gas emissions, volcanic eruptions, and many more. Acid rain cause damage to crops and public property. Acid rain means the water is acidic that is the pH of the water is within the range of $4.2-4.6$.

Normally, aquatic life can survive under the pH of $7.0$ which is neutral but when acid rain flows in the river the pH decreases and the water becomes acidic and this leads to the death of aquatic animals.

Thus, the Reason(R) is the correct explanation for the Assertion(A).