Questions

The United Nations Public Service Day is observed every year on June 23 to recognize the work of public servants and to encourage young people to pursue careers in the public sector. The day is also observed to celebrate value and virtue of public service to the community and to raise awareness regarding the contribution of public service in the development of society and honouring the work of public servants.

According to World Health Organisation World's Anti-Tobacco day was observed on 31 may 2013.This worked on a Objective of Ban Tobacco advertising,promotion and Sponsership

Concatenation of text means adding a word with other word. It can be done using Ampersand (&).

For example :

'Amper' & 'sand' = Ampersand 

A colored ion generally indicates a transition metal.

 A word processor would most likely be used to do type a biography.