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The pH range that is most conducive to freshwater plant and animal life is:

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3.5 to 5.0

9.0 to 10.5

2.0 to 3.5

6.5 to 7.5

answer is A.

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Detailed Solution

Concept: Living living beings can survive as they were in a contract extension of pH alter. ∙ A pH inside an extent of 7.0 - 7.5 is perfect and conducive for most organisms.

Explanation for off-base choices:

Option B: A pH run of 2.0-3.5 is as well acidic and not fair for both plants and animals.

Option C: A pH extend of 3.5 - 5.0 is additionally acidic and will influence the sea-going life.

Option D: A pH run of 9.0-10.5 is soluble. This will once more disturb the living systems.

Hence, a pH of 6.5 - 7.5 is most conducive for life in freshwaters.

Hence, the correct answer is option A.

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