Biosphere 2 is an artificial, materially closed ecological system. Why does it have the number 2 in its name?
Correct answer: Biosphere 1 is the Earth itself
kk
Got to see it in 2017 - interesting place where research is still going on!
Player #35880935
Wasn't Pauly Shore stuck in there?
TestyAlien3443
unfortunately its original 2-year mission did not achieve self-sufficiency