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The first hint to crack the puzzle "__ dioxide, greenhouse gas in the atmosphere" is:

It is a word which contains 6 letters

      

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The second hint to crack the puzzle "__ dioxide, greenhouse gas in the atmosphere" is:

It starts with letter c

c      

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The third hint to crack the puzzle "__ dioxide, greenhouse gas in the atmosphere" is:

It ends with letter n

c      n

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Looking for extra hints for the puzzle "__ dioxide, greenhouse gas in the atmosphere"
c      n
Click on any empty tile to reveal a letter

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The answer for the puzzle "__ dioxide, greenhouse gas in the atmosphere" is:
c a r b o n

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