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
11%
2%
7%
76%
42
flagAustria
15%
6%
9%
68%
32
flagDenmark
14%
3%
14%
67%
28
flagthe Netherlands
15%
3%
15%
64%
51
flagRepublic of Ireland
18%
6%
14%
61%
49
flagBelgium
8%
8%
21%
60%
23
flagPoland
20%
6%
12%
59%
16059
flagthe United Kingdom
22%
5%
13%
58%
507
flagNorway
21%
2%
17%
58%
46
flagGermany
25%
3%
13%
57%
232
flagCanada
18%
11%
12%
56%
81
flagItaly
30%
6%
6%
55%
43
flagFrance
21%
7%
16%
54%
42
flagUnknown
23%
6%
15%
53%
82
flagAustralia
31%
4%
12%
52%
48
flagthe United States
26%
9%
13%
49%
722
flagIndia
29%
19%
16%
34%
134

Gender

men59%
women55%
Caspian Sea
19%
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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