Answer:
1 x 10^-12 mol dm^-3
Explanation:
[H+] = 10 ^ -pH
Therefore, pH 12 = 1 x 10^-12 hydrogen ion concentration
I think the awnser to your question is C
<span>c. A jar of pond water with a lid on it (: hope this helps!</span>
The answer would be a bird eats seeds because that is what the parent has been feeding him.
