Mmmm yeah Mmmm yeah People thought all animals Arrived here unrelated The world began, and then came man All perfectly created But then someone looked up a tree And said: That monkey looks just like me! So it really was a mystery What I'd learned in natural history So I joined HSM Beagle Watched the eagle and the seagull We studied rock and plants Flowers, trees and bees and ants Slept on hammocks without pillows Eating rats and armadillos Till I realised on reflec-tion It's natural selection! Yeah Natural selection means Each animal evolved To blend with it's surroundings Ch-ch-changes were involved So birds with different, foods to seek Seemed have developed, different beaks And over time they'd Modified So just the fittest Of them all survived On the Isles of Galapagos I noted the giant tortoise Had interesting shells And I rode on them as well Iguanas land and swimming Meant my new theory was winning It all led in the direction Of natural selection My findings went without rage From the ch-ch-ch-ch-church of England And from me The idea that we came from ch-ch-chimps Questioned my own Christianity But it was hard to disagree Every species new mutation Had a perfect explaination It seems the world's exception Must be date con and perception And if lack of adaptation Miss a fatal limitation So each creature's imperfection Over time gets a correction Meaning animal collections Grow unique means of protection And to fail nature's inspection Means a media projection Which all leads to the detec-tion Of natural selection Natural selection