Answer:
I think its might be 1 because the ionic numbers for CA is +2 and for P its +3
The answer is A. the solar ultraviolet ray breaks the molecule apart
It is more likely 9. pH 4 is acidic and pH 9 is basic, and as the pH of a substance gets closer to 0 or 14, the substance becomes more corrosive or reactive. As 4 is closer to 0 than 9 is to 14, there is a much higher chance the solution has a pH of 9, because pH 4 is less neutral and therefore more corrosive/reactive than pH 9.
There is too much light entering her eyes.
