What is the essential message of the passage?
We continue to depend on fossil fuels heavily
Mitigation of the greenhouse gases is imperative
We must invest in research and development
People must change their lifestyle
Next Question
There are 50 students admitted to a nursery class. Some students can speak only English and some can speak only Hindi. 10 students can speak both English and Hindi. If the number of students who can speak English is 21, then how many students can speak Hindi, how many can speak only Hindi and how many can speak only English?