Which pH range is most suitable for life of fresh water plants and animals?
A. 6.5 – 7.5
B. 2.0 – 3.5
C. 3.5 – 7.0
D. 9.0 – 10.5
Answer:A
Which pH range is most suitable for life of fresh water plants and animals?
A. 6.5 – 7.5 B. 2.0 – 3.5 C. 3.5 – 7.0 D. 9.0 – 10.5