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.

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Answer:

Carbon dioxide from volcanic activity became a major part of the atmosphere.

Explanation:

The biggest difference between the Earth's second atmosphere and third (present) atmosphere is;

  • Carbon dioxide from volcanic activity became a major part of the atmosphere.

According to this question, we are to discuss the difference between the Earth's second atmosphere and third (present) atmosphere.

As a result of this we can see that Carbon dioxide which is as results of  volcanic activity serves as a crucial part that make up atmosphere.

Therefore, Carbon dioxide from volcanic activity became a major part of the atmosphere serve as the difference between Earth's second atmosphere and third atmosphere.

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