Answer:
The atmosphere of early Earth was likely composed of methane, ammonia hydrogen, and water vapor.
Explanation:
The atmosphere of early Earth was likely composed of methane, ammonia hydrogen, and water vapor.
The Oparin-Haldane hypothesis posits that the early Earth's atmosphere was a reducing atmosphere, which was composed of methane, ammonia, hydrogen, and water vapor. This atmosphere was significantly different from the current atmosphere, which is composed of nitrogen, oxygen, and carbon dioxide.