Read the description below and answer the question that follows. national geographic is published by the national geographic society, a nonprofit institution that focuses on science and education. it's well-known for its photography and its reporting on various scientific discoveries, world issues, and cultures. authors range from writers and editors to scientists in the field. the magazine addresses concerned citizens of the world, generally with some educational background, and its purpose is to inform. based on the description above, what kind of magazine is national geographic? substantive periodical scholarly popular