Plz provide me with questions on topic - Paragraph writing and Letter Writing (informal and formal both)

Dear student,

You may consider the following topics for paragraph writing:

1. Food Adulteration
2. Social Networking Sites: Positive or Harmful
3. Conservation of Energy and Water Resources
4. India 2020 
5. Life: A Game of Money
6. Modern Existence, Modern Diseases

Few topics on which informal letters can be written are:

1. Write a letter to your father from your boarding school, asking him for permission to go for an excursion.
2. Write a letter to your friend apologising for not meeting him/her at the airport and explaining your reason for the same.
3. Write a letter to your friend describing your annual day function at school with him.
4. Write a letter to your friend, letting him know the importance of social networking.
5. Write a letter to a friend, discussing on saving wildlife and prohibition on killing and poaching in order to protect the environment.
6. A misunderstanding has caused an annoyance with a close friend. Write a letter to your friend explaining the incident to request him/her to solve the matter.

Few topics on which formal letters can be written are:

1. Write a letter to the Editor about traffic jam caused due to ongoing project of metro rail.
2. Write a formal letter to the Editor expressing your concern over the decreasing number  of tigers.
3. Write a letter thanking the coach for selecting you as the captain of the School Football Team.
4. Write a letter to Editor of a local newspaper complaining about harmful affects of child labour.
5. Write a letter to the President of your local resident's Welfare association, suggesting that the plot in the colony be converted to a park.
6. Write a letter to the government ensuring steps for sensitive behaviour towards animals.
7. Write a letter to the Editor of a newspaper on the need for education for all children.
8. Write a letter to the Editor of a newspaper reporting the safety of women in the city during the nighttime.
9. Write a letter to the Company from which you have placed orders for the curriculum as there has been a delay in the delivery of books.
10. Write a letter to the Principal of your school asking for two days leave to attend your cousin's wedding.

Regards