Neelam is teaching in her class about birds, suddenly Vidya asked a question why birds move their neck so many times. What will be Neelam's answers of the following ?
1
Due to moving neck birds are able to fly
2
Due to moving neck food from mouth easily and quickly reach to stomach of birds
3
By moving neck bird can be talks in gestures with other birds
4
Because eye ball of birds is immovable