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

New Zealand

10%

70%

15%

the Netherlands

57%

38%

Germany

13%

56%

29%

Indonesia

55%

11%

29%

India

13%

54%

13%

16%

992

Pakistan

54%

12%

21%

134

Unknown

54%

11%

27%

Nigeria

10%

52%

26%

10%

Greece

52%

11%

35%

Poland

10%

51%

33%

26813

Malaysia

12%

50%

17%

19%

the United Kingdom

11%

48%

29%

415

the United States

13%

46%

30%

1347

Canada

14%

46%

28%

the United Arab Emirates

10%

46%

17%

25%

the Philippines

15%

42%

14%

24%

128

Australia

17%

42%

10%

26%

Ghana

16%

38%

11%

27%

Republic of Ireland

14%

33%

14%

37%

Singapore

12%

25%

10%

51%

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