Question

Write a letter to your father telling him why you wish to accompany a friend to the countryside during summer vacation and asking him for the permission

Answer 1

You can include points like:

1) Staying away from your family will give you a sense of responsibility
2) Staying in the Country side will make you healthier and fitter..you will be relaxed and exposed to fresh air.
3) You as a biology enthusiast can spend time studying the nature around you,etc

hope it helps