God said be fruitful and multiply. He did not want "population control".You understand, of course, that if all species indeed were fruitful and multiply (and did not die), the world would by overpopulated in notime. You see, a pair of fruitflies would easily take up all earths biomass in months with their offspring if they could not die.
Do you have scientific evidence that there were fruitflies in the Garden of Eden?