Given the question: Answer the following question given this paragraph: The earliest Earth did not have an atmosphere or free water. The planet was far too hot for gases and water to collect. The atmosphere and oceans that we see today evolved over time. The gases came from volcanic eruptions and from comets. Q: Gases on earth originated from comets and what events? Choices: - supernovas - black holes - tides - volcanic eruptions A:
The answer is:
volcanic eruptions