Today's Sentence
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The longer we stay in an unventilated space, especially with multiple people, the higher the concentration of carbon dioxide in the atmosphere.
Original Video:
How Classrooms Slow Your Brain Down
Key Vocabulary
2. concentration
concentration
[͵kɑnsɛnˋtreʃən] (n.)
3. atmosphere
atmosphere
[ˋætməs͵fɪr] (n.)
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