Answer: I think it's War can affect family relationships.
Explanation: If its right pls mark brainliest! :)
Answer: I'm not going to write your whole essay for you, but some good reasons to use would be: A change in atmosphere, they can experience what life is like on a different planet, they can get a chance to learn more about mars or anything else about space, and they can compare and contrast how different mars is from earth along with make new memories on a different planet.
ok? （*゜ー゜*）
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