Question

We have different soil samples, when we measure their pH it was recorded as:
sample No.1 pH 8.5
sample No. 2 pH 7.5
sample No. 3 pH 5.5
sample No. 4 pH 9
sample No. 5 pH 6.0
What do the readings indicate?

Answer 1

Answer:

THEY INDICATE THE pH level of the substance .....