What is the longest river of Antarctica?

Aiken Creek
Alph River
Lawson Creek
Onyx River
The Onyx River is a meltwater stream, which flows westward through the Wright Valley from Wright Lower Glacier and Lake Brownworth at the foot of the glacier to Lake Vanda, during the few months of the Antarctic summer. At 32 kilometres in length it is the longest river in Antarctica.
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Very interesting!
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Answers by country

Aiken Creek
Alph River
Lawson Creek
Onyx River
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flagRepublic of Ireland
0%
15%
10%
71%
38
flagGreece
10%
3%
20%
65%
29
flagItaly
10%
8%
16%
62%
48
flagthe United States
9%
12%
22%
53%
277
flagRomania
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10%
10%
50%
10
flagPoland
14%
10%
30%
44%
3989
flagGermany
8%
7%
40%
43%
543
flagIsrael
7%
14%
28%
42%
14
flagthe Netherlands
15%
0%
40%
40%
32
flagthe United Kingdom
15%
12%
33%
37%
165
flagAustralia
30%
12%
21%
36%
33
flagCanada
5%
23%
35%
35%
17
flagFrance
8%
25%
33%
33%
12
flagIndia
17%
25%
25%
30%
62
flagAustria
10%
6%
55%
27%
76
flagThailand
0%
0%
75%
25%
16
flagSwitzerland
5%
25%
48%
20%
39
flagSpain
18%
36%
27%
18%
11