Which lake is the oldest in the world?

Caspian Sea
Lake Superior
Lake Victoria
Lake Baikal
Lake Baikal is the deepest and the oldest lake, at least 25 million years old. It was formed as an ancient rift valley. Due its age, size and iso­la­tion, it hosts about 1000 endemic species of plants and animals (which can be found nowhere else in the world).

Answers distribution

Caspian Sea
Lake Superior
Lake Victoria
Lake Baikal
answers
flagLithuania
8%
0%
0%
91%
24
flagUkraine
9%
0%
4%
86%
22
flagRussia
4%
4%
8%
78%
23
flagSpain
12%
2%
7%
75%
41
flagDenmark
12%
4%
16%
68%
25
flagAustria
17%
6%
10%
65%
29
flagthe Netherlands
16%
4%
16%
64%
50
flagBelgium
4%
9%
22%
63%
22
flagRepublic of Ireland
18%
6%
14%
61%
49
flagPoland
20%
6%
12%
59%
15461
flagthe United Kingdom
21%
5%
13%
58%
484
flagItaly
27%
8%
5%
58%
36
flagGermany
25%
3%
13%
57%
228
flagCanada
17%
11%
13%
57%
76
flagFrance
21%
7%
16%
54%
42
flagNorway
24%
2%
19%
53%
41
flagAustralia
30%
4%
13%
52%
46
flagUnknown
29%
4%
14%
50%
62
flagthe United States
26%
9%
13%
48%
701
flagIndia
30%
20%
16%
31%
126

Gender

men59%
women55%
Caspian Sea
20%
22%
Lake Superior
7%
7%
Lake Victoria
13%
14%
Lake Baikal
59%
55%

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answers
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Which lake is the oldest in the world?
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