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but when it reach to that point, I believe the water level must rise up alot.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。+ i  s% f" }+ V4 K8 K! D+ g& A6 }
Eventually, there will not have enough space for people to stand.
. s: S9 h  l7 z% U公仔箱論壇Oxgyen supply will become a critical problem of building a 2000 floor building.公仔箱論壇. i3 B4 g$ J5 T6 r8 C- y
When the Earth gets more crowded, the oxygen will not be enough to supply to all the man-kind.公仔箱論壇  N- q$ {# E: t) y
AT a result, I think human will never going to reach that point.