How deep is the root system of a giant sequoia?

4 meters (13 feet)

20 meters (60 feet)

40 meters (130 feet)

80 meters (260 feet)

The sequoias root system is wide spreading, but shallow. There is no taproot. A mature sequoia's roots can occupy over 1 acre of earth and contain over 90,000 cubic feet of soil.

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Australia

62%

10%

20%

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60%

13%

17%

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42%

12%

22%

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42%

35%

14%

Russia

39%

12%

39%

Nigeria

36%

27%

18%

Pakistan

32%

10%

28%

Unknown

27%

17%

24%

31%

Republic of Ireland

27%

18%

27%

the United States

25%

12%

34%

26%

208

Poland

23%

17%

28%

30%

7205

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23%

19%

26%

28%

183

the Philippines

23%

41%

29%

the United Kingdom

22%

35%

20%

Germany

18%

14%

36%

30%

Canada

16%

33%

41%

Austria

13%

47%

30%

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

What is the name of this butterfly species?

Goldhair moth

Neopalpa donaldtrumpi

Unsightly butterfly

Huskhead neopalda

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What sound can be heard when approaching an iceberg?