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Across:
3. a titration___ reveals the equivalence point of an acid-base titration(5 letters; last letter P)
12. Dr. Ken______ proved that acid rain affects brook trout populations(7 letters; 2nd letter E)

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11. human blood is slightly___in pH (5 letters)

PLEASE AND THANK YOU!!!! :)

Dr KEN FRANK

BASIC

That's the answer to your 3rd question.

Mrs Bantry
The answer stipulates (7) letters.