In urban air pollution, the most poisonous gas is supposed to be carbon monoxide. It is hazardous because it
a) affects our sense of smell
b) is carcinogenic in nature
c) combines with haemoglobin
d) causes blindness
In urban air pollution, the most poisonous gas is supposed to be carbon monoxide. It is hazardous because it
a) affects our sense of smell
b) is carcinogenic in nature
c) combines with haemoglobin
d) causes blindness
