Thats the answer for your question
Answer:
Claim 3...... Oxygen........
Answer: When DNA is being copied for the Daughter cells
Explanation: There is a mistake when the DNA is being copied for the new daughter cells. When a cell divides, it must divide its DNA into 2 exact copies of the orginal DNA for the 2 new daughter cells. Sometimes the copy isn't correct and the cells mutates.
I think that it is most visible in water because it separates from the water and stands out.