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but when it reach to that point, I believe the water level must rise up alot.公仔箱論壇$ K5 p! W4 S* a- @/ t
Eventually, there will not have enough space for people to stand. 公仔箱論壇' \; K, D7 ]# V, ~. ?. o
Oxgyen supply will become a critical problem of building a 2000 floor building.5.39.217.77:8898  }! j+ \& H, F) Y5 Q# Q1 X
When the Earth gets more crowded, the oxygen will not be enough to supply to all the man-kind.TVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。; J4 N5 ?( o; _+ i: f5 t
AT a result, I think human will never going to reach that point.