Yes. Man can alter it. Yet it takes millions of years to do it. You see, Mars' atmosphere is just thin and it requires a great amount of elements and compunds to form an atmosphere as thick as ours. To do that, some species of living things must occupy mars that are able to produce the basic elements that are needed to make an atmosphere that is suitable for habitation.
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i need 200 words? you can?
i need 200 words too :) but thanks to your answer
i need it 200 words too
Thanks for this info but I need 200 words also.
Need 200 words pls. Thanks for this answer