How Does Waatney Manipulate The Air In The Martian

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In his novel The Martian, author Andy Weir writes about astronaut Mark Watney’s struggle to survive on Mars after a brutal sandstorm led his crew to abandon him. During the five hundred and forty-nine days before his rescue, Watney resides alone on the desolate red planet and spends almost no time worrying about whether he will survive; he just does it. Watney makes use of his background in botany and mechanical engineering to solve problems he encounters along the way while relying heavily on the equipment NASA provided his crew for their original mission. As he reflects on his situation, Watney states with a sense of humor, “[i]f the oxygenator breaks down, [he will] suffocate. If the water reclaimer breaks down, [he will] die of thirst. …show more content…

Because the Martian air contains mostly carbon dioxide with only trace amounts of oxygen, the Hab is outfitted with an atmospheric regulator to simulate Earth’s atmosphere, provide sufficient oxygen, and keep astronauts healthy. When Mark is out on the surface of Mars performing Extra-Vehicular Activities (EVAs), he carries more oxygen than he requires, and the EVA suit’s filters absorb and eliminate the carbon dioxide he creates while breathing. He records in a log entry that “the limiting factor to life support [is] [n]ot the amount of oxygen you bring with you, but the amount of CO_2 you can remove” Weir 5. He is able to make use of his extensive knowledge on the atmosphere and what it is made up of to manipulate the atmospheric regulator and EVA suits, extending the time he is able to survive on Mars after his fellow crewmates abandoned …show more content…

He has a limited food supply and knows that he must generate additional food in order to survive until he can be rescued. Mark decides to fertilize the Martian soil and grow potatoes with it. He knows that this is possible because “Martian soil has the basic building blocks needed for plant growth, but there’s a lot of stuff going on in Earth soil that Mars soil doesn’t have, even when it’s placed in an Earth atmosphere and given plenty of water” (Weir 12). In order to recreate Earth soil, he hauls in enough dirt to cover all of the floor space ten centimeters deep, then fertilizes the soil using food byproducts in a compost with his own waste. In order to stay alive until the Ares 4 mission arrives, Mark needs to consume a little over one thousand calories each day while also getting enough protein and nutrients to survive. The protein from the food brought on the mission will be enough, and he also has over double the amount of multivitamins necessary to stay healthy. Watney already has the correct atmosphere to sustain the potato growth, but needs to create more water for the soil and the potatoes, as mentioned previously. That problem aside, he devises a way to produce even more potatoes by cutting “each potato into four pieces, making sure each piece ha[s] at least two eyes […] where they sprout from” (Weir 21). Then he will replant the sprouts after forty days, ending up with enough potatoes to provide him

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