text: The first danger that Venus definately has, is its thick atmosphere that's almost 97 percent carbon dioxide that blankets the planet. This is true, because it says "A thick atmosphere of almost 97 percent carbon dioxide blankets Venus." Also no scientists want to go there, because of the even more challenging clouds that are highly corrosive sulfuric acid in the planet's atmosphere. This is also true, because the passage says "Even more challenging are the clouds of highly corrosive sulfuric acid in Venus's atmosphere.