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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. |+ e  Y' g! |- T" O* z9 Y
Eventually, there will not have enough space for people to stand.
" ], _- ?9 F" I5.39.217.76Oxgyen supply will become a critical problem of building a 2000 floor building.6 g" @, a( j4 x8 E; Q, V
When the Earth gets more crowded, the oxygen will not be enough to supply to all the man-kind.
# b! K$ H' \$ \. ?. h公仔箱論壇AT a result, I think human will never going to reach that point.