The answer to this question is D.
B rusting iron because whatever is making it rust is reacting with the iron to cause it to rust.
Answer:
A pH scale reading 13 indicates a strong base.
Explanation:
From my understanding:
1 -4 is a strong acid
4 - 7 is weak acid
7 - 9 is a weak base
9 - 14 is a strong base
International System of unites.
