1 Look around and you will start to realize how many inventions are inspired by
nature. Airplanes that glide through the air use some of the same design features of a
bird. Newly developed walking canes that help the visually impaired navigate
obstacles use ultrasonic waves similar to echolocation: the use of sound to help
direct movement, used by bats and dolphins. These are just a few examples of human
innovation that use nature as a model.
Which sentence from the passage includes a subordinating conjunction?
