CBSE Class 10 Answered

Only 20 percent of the sunlight that hits Venus makes it through the cloud cover, while the other 80 percent is reflected back into space. This reduced sunlight doesn't make Venus a cold world, however, because the thick carbon dioxide atmosphere traps the planet's heat.

Surface temperatures are hot enough to melt lead. The surface pressure on Venus is the crushing equivalent of being nearly a mile deep in Earth's ocean. The landscape, covered in volcanic rock, is desolate and waterless, but rich in sulfur. Venus's atmosphere is more than 96 percent carbon dioxide, with 3 percent nitrogen and traces of other gases.