Question 4
What is happening to the light, in terms of the direction it travels, as it passes through the glass?

B. nuclear reactions could first occur.

Ithink it's the third answer

The answer is a a and x i just took the quiz and it was right

Add an acid or a base to the solution to change the ph. adding an acid will decrease the ph, while adding a base will increase the ph(by the way a base is basically the opposite of an acid)