While India's Human population is growing at an astounding pace, the bird population is shrinking fastly mainly because1. There has been an abnormal increase in the number of hunters.2. Bio-pesticides and organic manure are being used on a large scale.3. There has been large-scale reduction in the habitats of the birds.4. There has been a large-scale use of pesticides, chemical fertilizers and mosquito repellents. Select your answer correctly using the code given below. Code