Sound is not heard clearly in big halls. Why?
Sometimes, sodium chloride solution is poured in a permutit vessel. Why?
If you are kept blind folded in a room, how can you find out whether the room is occupied by producing sound?
plz answer all the questions

i'm assuming that it's c.) red bank..

the major pests we deal with are insects, weeds and fungal diseases. a pesticide is a product, whether organic or chemical, used to kill the target pest. there are other techniques gardeners should use that can prevent the severe infestations that make the use of pesticides necessary

20 drops hope this