text: The author further supports his or her idea by explaining why studying Venus would be so difficult. The author explains in paragraph 3, "A thick atmosphere of almost 97 percent carbon dioxide blankets Venus. Even more challenging are the clouds of highly corrosive sulfuric acid in Venus's atmosphere." If there were no explanation on why it would be diffucult to study Venus there would be no way for scientists to figure out solutions to the various problems of studying Venus.