No, atheism just believes that there are no Gods.
However, let's deconstruct your argument from incredulity (which is a phallacy; reality doesn't care whether or not you believe it).
There are millions of billions of planets in this universe, and we can suspect just from the measurements we've taken in this solar system alone that they are all different from one another. At least one of them, somewhere, would be practically certain to be capable of supporting life. There's your "perfect biosphere" ..... of course, it's only "perfect" as far as the life it eventually ends up supporting is concerned. It'd be terrible for a different kind of life.
Now, life requires self-replicating molecules. Once you've got a few of them, then they will just go on replicating themselves until something stops them. Put the right chemicals together and you get a self-replicating molecule; we haven't managed that in the laboratory yet, but then, given that we've only been trying in a few laboratories for about 200 years as opposed to billions of years across the entire freaking universe, we've got bl%%dy close.
And that could have been the end of it, right there and then, but for the fact that when these molecules self-replicated, they did so with slight errors. Most of these errors were deadly, many were neutral, but a tiny few were beneficial. And when there are large enough colonies of self-replicators fighting for life, any advantage you can get is a good thing. Because the errors are only slight, features do tend to stick.
Of course, the early life-forms affected their environment just by existing (which is where all the water and the oxygen came from); and mutations that might once have been regarded as neutral or slightly damaging now became advantageous.
Life exists to reproduce, so it was unsurprising that it would develop sophisticated mechanisms for doing so. And in the struggle for life, sense organs helped -- as long as they actually sensed stuff that was around. Such as pressure waves from about 5 Hz to 50 kHz, or electromagnetic waves from about 300 to 1000 nm.
Are you beginning to get the picture yet, or are you just refusing to listen to reality?