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Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? Activity 2: How High Does the Atmosphere Go? 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