Answer:
The chlorine from the chlorofluorocarbons reacts with free molecules of oxygen causing a stop in ozone production. ... Free oxygen atoms can replace the chlorine in chlorine monoxide, releasing a free atom of chlorine which can then recombine with an oxygen atom in ozone, destroying more ozone.
The geological features were different. And humans development was different.
It would be probably be 1, as the recommended would be the average
A. The hosts body could reject the transplanted stem cells
