Rate the following argument fragment on its writing, argument, and language skills:
Evidence: Although Venus is analogous to Earth, there are slight differences of the two planets. Earth has average low and high temperatures, while the temperatures of Venus are more extreme. Paragraph 5 reads, "At thirty-plus miles above the surface, temperatures would still be toasty at around 170 degrees Fahrenheit, but the air pressure would be close to that of sea level on Earth. Solar power would be plentiful, and radiaton would not exceed Earth levels. Not easy conditions, but survivable for humans" (The Challenge of Exploring Venus).

Score: 2