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
generate 5 questions about planet earth.
user
1. how old is the earth? 
2. what is the circumference of the earth? 
3. what is the composition of earth's atmosphere? 
4. what is the average depth of the ocean? 
5. how many species of animals live on earth?
assistant