Podcast
Questions and Answers
Earth is the ______ closest planet to the Sun.
Earth is the ______ closest planet to the Sun.
third
Earth is the ______ largest planet in our solar system.
Earth is the ______ largest planet in our solar system.
fifth
Earth is the only planet that contains ______.
Earth is the only planet that contains ______.
life
Earth is ______ billion years old.
Earth is ______ billion years old.
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Earth's surface is mainly ______.
Earth's surface is mainly ______.
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