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

India

13%

54%

14%

17%

1634

Unknown

54%

11%

27%

the Netherlands

54%

39%

Italy

54%

34%

Germany

12%

53%

29%

1041

Poland

10%

52%

32%

31094

Malaysia

11%

51%

16%

19%

Australia

13%

50%

10%

23%

164

the United Arab Emirates

50%

11%

29%

New Zealand

50%

13%

31%

the United Kingdom

12%

49%

29%

701

Pakistan

49%

14%

24%

202

Switzerland

11%

49%

33%

the United States

12%

47%

31%

1661

the Philippines

11%

44%

13%

28%

186

Austria

19%

43%

33%

150

Canada

13%

43%

13%

29%

127

Republic of Ireland

11%

40%

38%

Nigeria

15%

37%

25%

20%

179

Singapore

16%

28%

46%

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