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.

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Answers by country

the Netherlands

55%

38%

Italy

55%

31%

India

13%

54%

14%

16%

1569

Unknown

54%

11%

27%

Germany

13%

53%

28%

747

Malaysia

10%

53%

15%

19%

Poland

10%

52%

32%

30394

Switzerland

16%

52%

22%

Australia

13%

51%

10%

22%

158

New Zealand

51%

14%

28%

the United Kingdom

12%

49%

29%

663

Pakistan

10%

48%

14%

23%

194

the United States

13%

46%

31%

1593

the United Arab Emirates

46%

12%

31%

the Philippines

11%

43%

13%

28%

176

Austria

21%

42%

32%

119

Canada

13%

41%

13%

30%

122

Nigeria

15%

38%

25%

20%

159

Republic of Ireland

12%

38%

40%

Singapore

15%

28%

47%

Are gas fittings tightened clockwise or anti-clockwise?

clockwise

anti-clockwise

it depends on the gas

there is no standard

How many percent of the total mass of the sun is gas?

Who coined the term "gas"?

Lactose intolerance is a frequent reason to avoid milk and dairy products. What is lactose?

a sugar

a lactic acid

a protein

a process of milk fermentation