and also this,
and all these:
…..were all made by accident?
On the contrary: Evolution is no accident, and while evolution certainly happens for a reason, it does not happen for a purpose, as creationists insist. The selection of beneficial genes (and the selection against harmful genes) for roughly 4 billion years has given us the wonderfully varied forms of life that surround us.
In fact, many complex systems have very simple origins. Bees pollinate flowers because flowers bribe them with food. Flowers bribe bees with food because it is more efficient to produce a small amount of pollen than to fill the entire air with pollen as gymnosperms do. If even one plant has an advantage over its peers by bribing bees into doing their pollination for them, over many generations their descendants will become more proliferate than their competitors.
Even the brilliant plumage of the Mandarin duck (which pales in comparison to the even more fantastic plumage and displays of the birds of paradise) is easily explained through sexual selection. Female Mandarin ducks just find colorful plumage sexy—which, in many bird species, is thought to be due to bright plumage signalling a good diet and good health—so colorful male Mandarin ducks have an advantage over their less colorful kin and eventually outbreed them.
Even the golden child of creationist “proof” for intelligent design, the eye, has humble origins as photosensitive cells clustered together simply to detect whether light was present or not. This graphic provides a nice summary of the different stages of evolution for the eye. I would also like to point out that, despite its complexity, the eye has many flaws. Blind spots, grainy night vision, and we can’t even see all the colors that birds and some types of shrimp see! A strange fact for something designed by a creator and made entirely in their image, but perfect sense when you take into account evolution.