Omnivores come from diverse backgrounds that often independently evolved sophisticated consumption capabilities. Humans and dogs may have evolved together. However, they evolved from originally terrestrial mammals. Bipedalism also evolved independently among the dinosaurs. Flightlessness has evolved in many different birds independently. As a result, SAMs evolved rapidly in the 1960s. Nevertheless, they have evolved various defence mechanisms to keep themselves alive. In the late 1990s, the design approach had evolved yet again. Its usage has evolved significantly over time. It was from clogging that tap dance eventually evolved. The family has also evolved a unique chemistry. So bioluminescence evolved parallel with photosynthetic organism. However, his views evolved considerably over the years. These compositions eventually evolved into "Still". These are virtues taught in schools that will be evolved in the 21st century.