Choose the best answer:
  
1. To control the insects, A farmer dissolved a material from small sachets, in water and sprayed on plants infected with insect larva. This material may be_______________
2There are two dustbins around the street corner of Kevin's house. One dustbin have spoiled food and other have plastic wastes. He has a doubt that why smell always comes from the dustbin with spoiled food.
3. Which of the following virus infect both plants and animals?