Pinpoint them to try to find the problem. Evolution functions; different traits for different jobs, ex. Beaks, teeth, feathers, etc. knocked them off, but flora and fauna have changed over time: problem #2: taxonomic relationship among living things; obvious relationships existed between different organisms, natural categories (ex. different birds, trees) Charles darwin, & the (cid:498)voyage of the beagle,(cid:499) he found some problems with current beliefs : problem #1: catastrophism - some believed species didn(cid:495)t change, god, problem #3: adaptations species have traits that seem to have special. Darwin(cid:495)s solution: species (cid:498)descended with modification(cid:499) from ancestral species (cid:498)natural selection(cid:499) is the mechanism for descent with modification. Evolution: is a change over time in the frequency with which particular genes and the characteristics they produce occur within a population: presented his explanation in 1859 in his book, on the origin of species by.