Answer:
A. By using your body cells to make new viruses
Well we are now able to explore places we are not able to go with technology
and also it has better prepared us for the future such as weather reports it is also one of the quickest ways of long range communication
Heart disease ways you can keep your heart healthy would be one.
In most cases animals get aggressive (D) in the habitation.
I believe it would be reliable? have a good day [:-))
