Read this excerpt from a book. Gravity is the source of a black hole’s super pull. You deal with gravity every day. You count on it to bring you back to the ground when you jump up. You depend on it when you try to catch a pop fly, knowing the ball will fall down. You expect it to be there, even if you don’t think about it much. –A Black Hole Is Not a Hole, Carolyn Cinami DeCristofano Which organizational pattern is the author using? definition clarification classification advantages and disadvantages