i believe the answer is b radioactive nucleotide
Answer:
For example, the Milky Way galaxy is some 100,000 light-years across, and our closest galactic neighbor, Andromeda, is some 2.5 million light-years away. In other words, it takes light 2.5 million years just to travel from our galaxy to the one that is right next to us.
Explanation: Hope this helps if not lemme know
True, just look at the weather channel on TV :)
