From an unspecified creationist "science" textbook, a worksheet of dubious pedagogical value. I mean, not only is this bad science, but it's a bad way to teach bad science. What is the point of a "test" that tells you what to write in the blanks?
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.