I need water to keep the tree alive too right?
Without anything else, just a singular tree....and a box
Edit - where I will get food you say? There's plenty of cheese on the moon
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If the box was air proof, you had a lifetimes worth of nutrient rich soil in the box, and the box filtered out uv radiation that would kill the plant, and the tree and you had were perfectly compatible in terms of your oxygen carbon dioxide equilibrium than maybe. Water would also have to be cycled.