<span>Current understanding of the evolutionary relations among organisms may change, as more species are discovered and studied.</span>
Answer:
The correct answer is A.
Explanation:
A mutagen changes the level of mutations that occur in the DNA either by affecting it physically or chemically. This helps researchers create different organisms with altered phenotypes according to what the research needs so that the genes can be investigated further under a controlled environment.
So the answer is A.
I hope this helps.
About 1 billion according to the photo
With the symptoms that is being described sounds to me like appendicitis
The correct answer for this question would be letter choice A) at the poles or the first option.
