The O Layer. I believe. Or the A horizon
It depends on the pH if the base. but normally light colors are for bases example blue green etc
The answer is C. Since aluminum reacts with chloride displacing only Copper.
They have different number of Neutrons and protons, so their masses are different
Hope this helps!
Think of w shape with 4 sides the shape I know tat is Quadrilateral is a square
