Final answer:
Astronauts need teamwork on a mission to Mars due to the complex nature of the mission, the need for problem-solving and decision-making, and the psychological support it provides.
Step-by-step explanation:
Astronauts need to use teamwork on a mission to Mars for several reasons. First, the mission to Mars is a complex and challenging endeavor that requires multiple individuals with different skills and expertise to work together effectively. Second, teamwork is essential for problem-solving and decision-making during the mission, as astronauts may encounter unexpected situations or challenges that require collaborative solutions. Third, the isolation and confinement of space travel can have psychological impacts on astronauts, and teamwork can provide support, camaraderie, and morale boost during long-duration missions.