I can't see the well but chemical changes happen when a substance combines with another to form a new substance. These processes are called chemical reactions and are not reversible except if you do more chemical reactions... So the well that is changing it's state of matter should be the one undergoing a chemical change. For, example boiling or freezing
There is no option or ocean breezes show
Answer:
Variations are caused by mutation. random mating between organisms.
Explanation: