Showertot?

That's weird, I got this line of thoughts as I was walking from the shower to the clothes drawer:

Evolution. You could say that, as said in evolution, organisms are evolving to adapt to their surroundings. To be more and more suitable to where they live, over a course of millions of years.
Now this got me wondering:
In fifty billion ka-trillijillion years (assuming the sun would stay intact by then), would every lifeform on Earth have identical features? Would there be one lone species on Earth?

I wonder this because, if evolution progresses, it would slowly make everything more 'perfect', more suited to that which surrounds every living thingy.
And if evolution applies to every single being on the planet, slowly becoming more and more adapted to their surroundings, to what Nature would see as perfect, wouldn't all species ultimately form into one, nature-supposedly perfect species that has adapted to every possible environment findable on Earth? To be an entire planet covered by one species alone. To be mammal-amphibian-reptile-plant-fish-human-bird-hybrids.
Cool.

Mm. And that's all.
VECTORS R FUNZ

-Zan