How does paragraph 1 of Passage 1 contribute to the development of the author's ideas?
By focusing on echolocation in bats, paragraph 1 explains how
humans can benefit from studying echolocation.
By explaining specific uses for echolocation, paragraph 1 gives
information about how bats developed the ability to echolocate.
By giving examples of objects that can be detected through
echolocation, paragraph 1 explains how animals can avoid detection.
By giving a detailed description of how echolocation works,
paragraph 1 helps the reader understand how other animals use
echolocation.