These can easily be explained:
Gravity, physical laws etc - they have to work as they do otherwise the universe couldnt have come into existence, if gravity was a different value the big bang would never have materialised into anything.
So by defination, they just work, else it wouldnt be here.
The Book "The Biotic Message" demosntrates why reasoning like the above is not a scientific explanation. The author refers to it as "the tautological anthropic principal".
Its somewhat similar to the saying "the universe has observable highly improbable features, because if it didn't it wouldn't exist, (and we wouldn't be to here observe the highly improbable features)." -It doesn't explain why it has the hightly improbable features to begin with.
"Why assume there is one universe? There have likely been multiple universes, most failing, ours works because the variables were correct.
As ReMine sows this is an explanation (as opposed to the tautological formulation), however it not testable, hense not science according to evolutionists standard.
http://saintpaulscience.com/contents.htm
"Shows the anthropic principle is not testable, and so not science by evolutionists' own criterion. It reveals an illusion involving a three-shell game ruse, much like is later revealed for natural selection."