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So in a larger scale, insects would not only not be able to breath, but would not be strong enough to support their own bodyweight either?Disappointing. No giant insectoid aliens for me. 
I personally do not think insects can still evolve.
If evolution is to repeat itself now it will be the turn of man to evolve not the incects or any other class of vertebrate or invertebrate this time
Quote from: Jerryade on 06/06/2008 15:45:09I personally do not think insects can still evolve.Why can't they evolve? New species of insect are discovered every day. QuoteIf evolution is to repeat itself now it will be the turn of man to evolve not the incects or any other class of vertebrate or invertebrate this timeEvolution is constant, what do you mean by evolution repeating itself? Why is it man's turn to evolve? Different species don't take evolution in turns.Evolutionary pressure doesn't exert itself on mankind the same way it used to. We are more likely to change our own environment to make ourselves more comfortable rather than adapt to it. One of the only significant evolutionary pressures I can think of is that in the western culture many of us eat high fat foods and turn into blimps, affecting sexual attraction and therefore will be less likely to reproduce. Ironically the reason we gain and hold weight so well is because we evolved through hundreds of thousands of years to be able to tolerate famines.