Q.151841: To deal with this situation, Delhi, one of the world's most polluted cities, was ordered by the Supreme Court to convert public vehicles of Delhi to natural gas-powered vehicles. |
पर्यावरण अध्ययन in english, जल question answers in english pdf questions in english, Know About पर्यावरण अध्ययन online test पर्यावरण अध्ययन MCQS Online Coaching in english quiz book