Why did the author write this passage? A) to describe what a sonic boom sounds like B) to show readers why sonic booms are dangerous C) to explain how sound moves through air to create a sonic boom D) to help people understand that everything is made of molecules

Which statement best describes a difference between the poem "ellis island" and the essay ": a native american view"? the poem discusses difficulties encountered by europeans, but the essay does not. the essay discusses the identity of the author, but the poem does not. the poem discusses immigration in the nineteenth and twentieth centuries, but the essay does not. the essay discusses hopes for america, but the poem does not.