What is inside Swiss cheese holes?

nitrogen
carbon dioxide
water vapor
air
Carbon dioxide is produced by bacteria feeding on the lactic acid. In the Middle Ages, the holes were con­sid­ered a sign of im­per­fec­tion and cheese makers would try to avoid them.

Answers distribution

nitrogen
carbon dioxide
water vapor
air
answers
flagFinland
1%
96%
0%
1%
53
flagItaly
2%
74%
2%
19%
67
flagthe United Arab Emirates
3%
73%
10%
13%
30
flagGermany
2%
69%
2%
25%
315
flagNorway
3%
69%
3%
21%
52
flagFrance
4%
65%
2%
25%
86
flagIndia
10%
64%
9%
14%
561
flagPoland
8%
63%
3%
24%
20844
flagSpain
3%
63%
0%
30%
33
flagRepublic of Ireland
5%
62%
3%
30%
100
flagPakistan
5%
62%
8%
20%
72
flagthe United Kingdom
9%
59%
5%
25%
772
flagthe Netherlands
4%
59%
1%
34%
81
flagMalaysia
12%
58%
12%
15%
39
flagthe Philippines
12%
56%
9%
21%
83
flagthe United States
11%
55%
6%
25%
1277
flagCanada
9%
54%
7%
26%
88
flagUnknown
12%
53%
3%
29%
101
flagSweden
6%
48%
6%
38%
31
flagAustralia
16%
45%
8%
26%
61

Gender

men67%
women59%
nitrogen
8%
10%
carbon dioxide
67%
59%
water vapor
2%
2%
air
21%
27%

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What is inside Swiss cheese holes?
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Author: Kasia
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