Its used to protect genetic diversity and help reintroduce into the wild.
Scientist believe that the earth has a spinning core which creates a magnet for the earth
So the following is the answer to you following choices and I hope you are satisfied with my answer.
#2 by making new habitats available to them.
#3 convergent evolution.
#4 a species evolves at a slow, steady pace.
#5 <span> Global temperatures drop several degrees after several massive volcanic eruptions.</span>