2. What does the author list in the passage? A different types of electromagnetic spectrums B different types of electromagnetic radiation C scientists who study electromagnetic radiation D the differences between radio waves and microwaves 3. We can think of electromagnetic waves as a kind of ongoing message being sent out by the universe. Humans are able to naturally access only a portion of this message. What information from the passage best supports this statement? A Mankind has invented tools to harness the information contained within electromagnetic radiation. B The waves emitted by our physical world make it possible for us to communicate over vast distances. C Without light, we wouldn't be able to process the visible world. D The human eye is only sensitive to a portion of the electromagnetic spectrum. 4. Based on the passage, what can be concluded about the ability of humans to see X- rays and gamma rays? A Humans cannot see X-rays and gamma rays. B Humans can see X-rays and gamma rays. C Humans can see X-rays but not gamma rays. D Humans can see gamma rays but not X-rays.​