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Questions and Answers
Approximately how old is planet Earth?
Approximately how old is planet Earth?
What does 'Ma' mean in the graphic?
What does 'Ma' mean in the graphic?
What is the main cause of the Earth being molten in its earliest stage?
What is the main cause of the Earth being molten in its earliest stage?
What contributed to the understanding of Earth's past?
What contributed to the understanding of Earth's past?
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What did the early atmosphere contain?
What did the early atmosphere contain?
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Which branch of science has contributed the most to understanding the main events of Earth's past?
Which branch of science has contributed the most to understanding the main events of Earth's past?
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When did Earth form in relation to the age of the universe?
When did Earth form in relation to the age of the universe?
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What process is believed to have created the primordial atmosphere and the ocean?
What process is believed to have created the primordial atmosphere and the ocean?
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What was the oxygen content of the early atmosphere?
What was the oxygen content of the early atmosphere?
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What is the geological time scale (GTS) used for?
What is the geological time scale (GTS) used for?
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