Answer:
It is a physical change because this change is reversible and no chemical reaction occurs.
Explanation:
Well the the answer is 70.8c but if you round it up it is 71c which I choice and got it correct so the answer is 71c
This is a chemical change because there is a new substance that was created and the new chemical can cause other chemical reaction to happen compared to the 1st state of chemical that was in the cave. Because the cave water was exposed to another environment, the calcium bicarbonate, which is also known as salt. When the cave's groundwater was exposed to a different environment the atom in the cave water rearranged and crystallized.
They are both made up of the same protein called "histones".
