text: Finally, the camera quality, shadows, and clouds of Mars prove that the Face is a natural landform. The better the camera quality the more proof there is to say that the Face is a natural landform. Also, without the clouds and shadows of Mars, the Face is easily identified as a natural landform. To conclude, this is how the quality of the camera, shadows, and clouds of Mars prove that the Face is a natural landform.The author of "The Challenge of Exploring Venus" did a fair job at arguing their claim, that Venus is a worthy pursuit despite the dangers it presents. The author used their thesis, counter-arguements, and rebutals to get across their point that Venus is a worthwhile investment to study. Some areas they exceeded and others they did not hit right on the ball.