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Which of the following statements is true?

A) Earth is the only planet with an atmosphere
B) Earth's atmosphere changed to an oxygen-rich one
C) Earth's formation was different from other planets
D) Earth does not change

User Tkay
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2 Answers

3 votes

Answer:

I think it's A & C

User Epple
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5 votes

Answer:

a

Step-by-step explanation:

User Rbrc
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