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What gemstone is this?

azurite

malachite

cinnabar

turquoise

Malachite is a copper carbonate hydroxide mineral, with the formula Cu2CO3(OH)2. This opaque, green banded mineral crystallizes in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and spaces, deep underground.

Ninjai

1

Mauro Cateb wikipedia → Malachite

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Answers by country

Iraq

10%

90%

0%

0%

10

Austria

11%

72%

0%

13%

44

Pakistan

9%

72%

9%

9%

11

Germany

10%

71%

4%

13%

322

Switzerland

17%

65%

0%

17%

35

Republic of Ireland

0%

64%

11%

23%

17

the Netherlands

7%

64%

0%

28%

14

Australia

7%

62%

25%

3%

27

Ukraine

20%

62%

12%

4%

24

Poland

11%

60%

4%

23%

10883

Canada

27%

45%

9%

18%

11

the United States

21%

44%

8%

25%

369

the United Kingdom

14%

41%

13%

29%

68

Greece

47%

41%

5%

5%

17

the Philippines

18%

37%

6%

37%

16

Unknown

31%

37%

6%

25%

16

India

10%

35%

12%

40%

64

How do baby birds get oxygen inside their eggs?

They have a large oxygen supply from the start

Oxygen is created during protein reduction

Oxygen comes in through pores in the shell

They don't need oxygen at all

Which dogs are known to eat fish?

Irish Water Spaniel

Portuguese Water Dog

Okavango river is famous for its biologically rich delta. What is the river's outlet?

It doesn't have an outlet to the sea

What is the half-time of radiocarbon? (carbon-14)