Which one of the following statement(s) is/are incorrect?

I. Without greenhouse effect, the average temperature at surface of earth would have been a chilly –18°C rather than the present average of 15°C .

II. Ramesh Chandra Dagar , a farmer of Sonipat (Haryana) has created the Haryana kisan welfare club, with a current membership of 5000 farmers.

III. Over half of the e-wastes generated in the developed world are exported to developing countries mainly to China, India and Pakistan.

IV. The use of incinerators is crucial to disposal of hospital waste, which includes disinfectants, harmful chemicals, pathogenic microbes, etc.