9 Questions
What is the current composition of Earth's atmosphere?
80% nitrogen, 20% oxygen
What played a significant role in creating the early carbon dioxide rich atmosphere?
Volcanic activity
What reduced the abundance of CO2 and increased the amount of oxygen in the atmosphere?
Algae and plant activity
What are the main gases that make up Earth's atmosphere?
Nitrogen, oxygen, carbon dioxide, water vapor, and noble gases.
What role did volcanic activity play in creating the early atmosphere?
Volcanic activity produced carbon dioxide, water vapor, and nitrogen.
What is the theory regarding the evolution of Earth's atmosphere?
The theory suggests that volcanic activity created a carbon dioxide rich atmosphere, which was later reduced by algae and plants, increasing the amount of oxygen.
During the first billion years of Earth's history, the Earth was really dry and there was intense ______ activity
volcanic
The early atmosphere consisted of loads of carbon dioxide, water vapor, and ______ along with smaller amounts of methane and ammonia
nitrogen
The composition of Earth's atmosphere is approximately eighty percent ______ and twenty percent oxygen
nitrogen
Test your knowledge on the evolution of Earth's atmosphere, from volcanic activity to the role of algae. Learn about the composition of gases and their percentages, including nitrogen, oxygen, carbon dioxide, water vapor, and noble gases.
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