Why Is the Possible Contamination of the Earth by Martian

question 7

Multiple Choice

Why is the possible contamination of the Earth by Martian microbes in a future sample return mission not considered to be a significant problem?

• A) Martian microbes will certainly be destroyed by terrestrial microbes
• B) any Martian microbes will be destroyed by high-energy particles and radiation on their trip back to Earth
• C) Martian microbes will be rapidly destroyed by oxygen in the Earth's atmosphere
• D) Martian microbes are likely to be quite different than terrestrial microbes and, hence, will probably not be able to affect life on Earth

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