Author's Purpose and Tone — quick quiz

Read the passage and answer the question. "Many people believe that bats are blind, but this is a myth. In fact, bats have perfectly functional eyes and can see quite well. They rely more on echolocation—sending out sound waves and listening to the echoes—to navigate and hunt in the dark. Bats are also important for our environment. They eat insects, pollinate plants, and spread seeds. Without bats, many ecosystems would suffer." What is the author's primary purpose in this passage?