Question 1: Estimate the mass of food and water that a team of six astronauts would need for a standard two-year mission to Mars. (Note: the two years includes the round trip.)
Question 2: Estimate how long it would take to drive from Los Angeles to New York City.
Question 3: Estimate the number of apples produced per year by a mature honey crisp apple tree.
Question 1: Estimate the mass of food and water that
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