How about "Biological evolution is an evolutionary system which has been observed to come into existence without an intellect [or requirement of same]. It is an evolutionary system because it has these elements or their equivalents of evolutionary systems. Those elements are: Replication, Heritable traits, Change, and Selection."
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'