... the Earth's atmosphere might have formed. Miller mixed "atmospheric" gases (hydrogen, methane, ammonia, and water vapor) in a sterile glass container and charged them with energy by adding electric sparks to them. The electric sparks resembled lightning at the time of the Earth's formation. After about a week, the mixture turned brown and was found to contain amino acids. This organic compound produced in ... were better camouflaged and harder to spot, having a better condition for survival. This hypothesis was not enough, and more experiments had to be made. A British ecologist, called...

• Word Count: 2685
• Approx Pages: 11
• Has Bibliography
• Grade Level: High School