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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Germany

12%

59%

25%

197

Indonesia

58%

10%

27%

India

13%

55%

13%

16%

1131

Unknown

54%

11%

27%

Pakistan

52%

13%

22%

148

Poland

10%

51%

33%

27693

Nigeria

15%

50%

25%

the Netherlands

50%

43%

the United Kingdom

10%

49%

28%

439

Malaysia

11%

49%

16%

21%

Greece

47%

43%

the United States

13%

46%

30%

1390

Australia

16%

46%

25%

103

the United Arab Emirates

10%

46%

16%

26%

Canada

14%

45%

28%

Ghana

19%

42%

23%

the Philippines

14%

41%

14%

26%

136

Austria

16%

35%

45%

Republic of Ireland

13%

34%

13%

37%

Singapore

11%

26%

11%

50%

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