It would increase dramatically the risk of forward contamination of the Mars surface with our earthly microbes, which would ruin our unique chance to study a pristine Mars.
All the reasons advanced to vindicate the act of Humans traveling to Mars are either wrong or can be addressed in a way that spares Mars.
The answer would be <span>D.A fact about the number of endangered species that are protected and helped to reproduce young while living in zoos.</span>
