It is mRNA because it picks up the chromosome
I think A is the answer its hard to explain but i hope this helped.
<span>The smell of Danger.
Researchers have discovered a single compound found in high concentrations in the urine of carnivores that triggers an instinctual avoidance response in mice and rats. This is the first time that scientists have identified a chemical tag that would let rodents sense carnivores in general from a safe distance.</span>
Answer:
Potassium and Carbon Dioxide
Explanation:
1. the first choice , hope that helped
