It depends on who you ask.
If you ask someone from an abrahamic religion (i.e. christianity, muslimism, juedism, etc..etc..) they tell you that just about everything *poofed* into existence the day an omnipotent being somewhere in the sky decided that everything should exist. This is generally thought of as the Creationist approach to evolution, and though each theory "evolves" on it's own in different ways throughout each religion, they are all founded upon the idea of many things being created all at once by one force or another.
If you ask a follower of empirical evidence, they will tell you that everything evolved at different times, different levels and in different and multiple ways, and that everything continues to evolve to this day. (example: first the big bang, then matter, space, stars, planets, bacteria, mushrooms, algae, plants, trees, aquatic life, fish, amphibians, reptiles, dinosaurs, animals, mammals, primates, humans, technology and so on). This is the Darwinistic approach to evolution.
If you ask someone who is more metaphysical, you will find that the answer is not as important as the question.
If you ask an existentialist, they will inform you that whatever you believe about evolution, with or without your own evidence, is true, because reality is just a figment of your imagination anyways.