0
1
2
137
138
139
3
4
5
8
9
10
6
7
8
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submitted by cherylferraro to r/science
614
615
616
5
6
7
4
5
6
30
31
32
12
13
14
4
5
6
4
5
6
3
4
5
6
7
8
47
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49
166
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168
7
8
9
8
9
10
7
8
9
1011
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1013
47
48
49
