Assignment:
An interesting topic relevant to organic chemistry is the origins of life on Earth, Francis Crick, co-discoverer of the structure of DNA, believes that life couldn't have possibly formed on Earth, and supports the notion of panspermia.
What types of limitations and obstacles must any plausible origin of life scenario overcome, and why did Crick believe life couldn't have formed on Earth?
Provide complete and step by step solution for the question and show calculations and use formulas.