2 is B. Water freezes and 4 is the rock breaks.
A device that measures atmospheric pressure that’s displayed by the height of a column of mercury.
Explanation:
Each liquid falls somewhere along a scale with acid at one end and alkaline at the other. Normally, ocean water is less acidic than fresh water. Unfortunately, as the ocean absorbs more and more carbon dioxide from the atmosphere, it becomes more acidic. Lemon juice is an example of an acidic liquid.
