positives and negatives of hydroelectric dams

15:04

5:30

1:19

10:20

10:20

10:20

10:20

9:59

5:46

5:25

10:00

9:54

1:42:34

5:43

4:25

9:13

3:45

2:35

8:56

3:49

کوتاه

7:18

17:36

4:51

2:59

35:26

8:12

کوتاه

12:38

7:24

3:32

15:19

1:02:05

3:40

1:46

3:34:06

1:06:23

10:16

3:48

1:42:25