1
2
3
Subject (ZB):
“...greenhouse effect...”
4
Subject (ZB):
“...greenhouse gas...”
5
Subject (ZB):
“...greenhouse effect...”
6
Subject (ZB):
“...greenhouse effect...”
7
8
9
10
Subject (ZB):
“...greenhouse effect...”
11
Subject (ZB):
“...greenhouse effect...”
12
13
14