1
2
3
4
Subject (ZB):
“...greenhouse effect...”
5
6
8
9
Subject (ZB):
“...greenhouse effect...”
10
Subject (ZB):
“...greenhouse effect...”
11
12
13
14
Subject (ZB):
“...greenhouse effect...”
15
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17
Subject (ZB):
“...greenhouse effect...”
18
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20
Subject (ZB):
“...greenhouse effect...”