Question

Fill in the blanks with the help of words given in bracket after the sentence.

Many ______ are responsible for causing ______ pollution. Petroleum ______ are a major source of ______ pollutants like ______ and ______.

(sulphur dioxide, refineries, industries, nitrogen dioxide, gaseous, liquid, people, air)

Answer 1

Many industries are responsible for causing air pollution. Petroleum refineries are a major source of gaseous pollutants like sulphur dioxide and nitrogen dioxide.