![subject](/tpl/images/cats/geografiya.png)
Geography, 23.01.2021 02:30 allytrujillo20oy0dib
What was the biggest difference between the Earth's second atmosphere and third (present) atmosphere?
Carbon dioxide from volcanic activity became a major part of the atmosphere.
Oxygen from plant photosynthesis became a significant part of Earth's atmosphere.
Oxygen from water vapor in the atmosphere became a large part of Earth's atmosphere.
High percentages of Carbon dioxide caused a sustained warming cycle 500 million years ago.
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Other questions on the subject: Geography
![image](/tpl/images/cats/geografiya.png)
![image](/tpl/images/cats/geografiya.png)
Geography, 23.06.2019 13:00, nemalmaqsoodp53nhh
Describe the characteristics of the nile river and the river’s importance to the people of egypt. write a paragraph of at least 5 complete sentences.
Answers: 3
![image](/tpl/images/cats/geografiya.png)
You know the right answer?
What was the biggest difference between the Earth's second atmosphere and third (present) atmosphere...
Questions in other subjects:
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 29.08.2021 20:10
![Konu](/tpl/images/cats/istoriya.png)
![Konu](/tpl/images/cats/himiya.png)
Chemistry, 29.08.2021 20:10
![Konu](/tpl/images/cats/mat.png)
![Konu](/tpl/images/cats/mat.png)
Mathematics, 29.08.2021 20:20
![Konu](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 29.08.2021 20:20
![Konu](/tpl/images/cats/mat.png)
Mathematics, 29.08.2021 20:20
![Konu](/tpl/images/cats/en.png)
![Konu](/tpl/images/cats/mir.png)
World Languages, 29.08.2021 20:20