Select the correct pair.
(a) 
- Travels very fast from one place to another
(b) 
- Chief cause of noise pollution
(c) 
- Emits harmful fumes
(d) 
- Transports oil from one place to another
Select the correct pair.
(a) - Travels very fast from one place to another
(b) - Chief cause of noise pollution
(c) - Emits harmful fumes
(d) - Transports oil from one place to another