FearGod
Freedom Of Mind
You had that question answered before. Remember r/K selection?
Or are you yet another creationist who demands we answer your questions and explain things for you, but then you ignore/forget it all?
It's actually more to planned than the work of nature, the high growth rates
need to have less lifespan than the low ones, it isn't for the benefit of the species
but for the survival of life on earth.