Evolution of species doesn't have a linear time till mankind open eyes.
Genesis 9:13 I have set my rainbow in the clouds, and it will be the sign of the covenant between me and the earth.
Pitch / Bitumen / Crude oil / Where could we find them, today? It's fun, too.
Genesis 6:14 So make yourself an ark of cypress wood; make rooms in it and coat it with pitch inside and out.
Today's annual rhythms begins "From Genesis 9:13". (This is my assumption.)
Today's light speed begins from Genesis 9:13, too. (I mean, position.)
http://www.youtube.com/watch?v=Yq98MskQ6…
So, they have breathed CO2 like trees.
Anyway...
People can make an answer but there is no a reason. (This is your so-called free will.)
God can make a reason but there is no an answer. (This is your so-called destiny & chance.)
Sometimes I say, Newton's apple is more clever than Newton.
Hope it helps.