Because the world rotates around and God the creator changed up the earth that's the biblical answer but a scientific answer would be due to himans
Well a mutation is like a change in the DNA and so if there was a mutation in the antártica fish, something in their genes would change. If that mutation has a positive effect on it, then that mutation would be passed down to the generations of fish, helping that fish with its survival or something
Answer: Option A.
Explanation: The correct answer to the question is option A, because not all proteins are made up of some combination of 20 essential amino acids.