Question: Perhaps due to brown bats' strange-looking flight patterns, many people believe that these fascinating mammals are blind. This is incorrect, because not only are they perfectly capable of seeing with their eyes, but they can also visualize their surroundings with their ears. Brown bats produce high-frequency sound waves that create echoes when they bounce off objects. In a remarkable process known as echolocation, they translate these echoes into visual information. Thus, even in the pitch dark of night, these bats can hunt insects, one of their food sources. They can also use echolocation to navigate their surroundings. Select the two details that are included in the text.