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

Switzerland

18%

58%

20%

Italy

58%

27%

the Netherlands

56%

36%

India

12%

54%

14%

16%

1519

Unknown

54%

11%

27%

Indonesia

54%

16%

25%

Malaysia

10%

53%

15%

19%

Poland

10%

52%

32%

30037

Germany

13%

52%

29%

605

Australia

13%

51%

10%

23%

155

the United Kingdom

12%

48%

29%

624

Pakistan

10%

48%

14%

23%

184

the United Arab Emirates

11%

47%

13%

27%

the United States

13%

46%

31%

1560

the Philippines

12%

44%

13%

28%

175

Canada

14%

42%

11%

29%

107

Austria

19%

40%

35%

Republic of Ireland

12%

38%

Nigeria

14%

37%

28%

19%

134

Singapore

14%

27%

10%

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