One day back in primordial oceans
Prebiotic soup was life-giving potion
First living things form, what a commotion
Followed by animals capable (of) motion

Organisms coming out of deep seas
Losing fins and growing legs, making it easy
Trying to survive, but as Charles Darwin told me
When there’s so many species what happens ain’t a mystery

Natural selection
Weak or fit, natural selection
Natural selection
Weak or fit, natural selection

Genes drift and shift, DNA will shape it,
Find a helpful change and the code’ll mutate it
There's a perfect habitat, organisms chase it
Some will go extinct because they can't make it

Human evolution shows this story
Primates go bipedal, stand upright instead of 4 feet
Yes, and gen’ral human life span is a’risin’ up past 40
Cause we’ve developed massive tribes that are so-ci-e-ties

Natural selection
Weak or fit, natural selection
Natural selection
Weak or fit, natural selection
We can see it in the fo-o-sil-ized collection
Oh, natural selection
Weak or fit, natural selection

Right now, who knows, what evolution will bring
No wisdom teeth, or appendix that’s shrinking
Darwin Awards, species bringing us shame
Same process, its name:

It’s called natural selection
Weak or fit, natural selection
Natural selection
Weak or fit, natural selection
We can see it in the fo-o-sil-ized collection
Oh, natural selection
Weak or fit, natural selection