Answers

2014-06-21T17:10:14+05:30
these are carbon dioxide 
              carbon monoxide
               particles of sulphur 
              diurnal 
          and benzene 
2 5 2
24
24 means
24 means u got 24 out of 25
ok if u dont want to mark it best than ok
and thnx for giving me 24 out of 25 :)
2014-06-21T17:28:37+05:30
Constituents of petrol and disel that cause pollution are.............1. Carbon dioxide....2. Carbon monoxide.......3.nitrogen oxides ......4. Soot particles
1 5 1