1
2
3
4
5
Subject (ZB):
“...greenhouse effect...”
6
Subject (ZB):
“...greenhouse effect...”
7
8
Subject (ZB):
“...greenhouse effect...”
9
Subject (ZB):
“...greenhouse effect...”
10
Subject (ZB):
“...greenhouse effect...”
11
13
14
Subject (ZB):
“...greenhouse effect...”
15
16
Subject (ZB):
“...greenhouse effect...”
17
18
19
20