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In the the morning, Miyuki went to her class very early and she saw her teacher sitting.
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| Oh! Good morning Miyuki. So lets start to our discussion? | |
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| The common gases are: air,natural gas,oxygen,carbon dioxide,nitrogen,water vapor,helium,argon. | |
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| Miyuki,what are some common Gases? | |
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| My father say last night that oxygen is important because we are able to breath and we need carbon dioxide to our plants. | |
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| Miyuki, explain what is oxygen in our life? | |
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