Explanation: CDC works 24/7 to protect America from health, safety and security threats, both foreign and in the U.S. Whether diseases start at home or abroad, are chronic or acute, curable or preventable, human error or deliberate attack, CDC fights disease and supports communities and citizens to do the same.
For a reader to "blank" two or more things, the reader must consider how the things are different. Contrast. What is one way that "The Maori: Genealogies and Origins in New Zealand" contrasts with "The Raven and the First Men: The Beginnings of the Haida"?