many species in a given region, what causes there to be diversity of species or a small number, does it depend on area, migration inward and outward? he was a great synthesiser. he probably came to attention when he wrote a book or a sociobiology, attempting to formulate laws of behaviour rooted in darwin s theory of natural selection. rooted in darwin s theory of naturalselection. he rooted in darwin s theory of natural selection. he had chapters on insects, reptiles, fish, primates, and then he thought he would add, for the fun of it, a chapter on one particular species of parochial interest to many readers, namely homo sapiens. that is when it hit the fan. when it hit the fan. you said he did it when it hit the fan. you said he did it for when it hit the fan. you said he did it for the when it hit the fan. you said he did it for the fun - when it hit the fan. you said he did it for the fun of- when it hit the fan. you said he did it for the fun of it, i when it hit the fan. y