as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
compare and contrast the two planets, mars and earth.
user
mars and earth are both planets in the solar system. mars is smaller than earth, with a diameter of 6,779 kilometers compared to earth's 12,742 kilometers. mars also has weaker gravity than earth, meaning objects weigh less on its surface than on earth. mars has a much colder climate than earth, and also lacks surface water and an ozone layer to protect its atmosphere.
assistant