Questions

The United Nations is an intergovernmental organization tasked with maintaining international peace and security, developing friendly relations among nations, achieving international co-operation, and being a centre for harmonizing the actions of nations. It was established in the year 1945 on October 24th. Its headquarters are in NewYork, US. India is one of the founder countries along with US, Venezuela, Australia, Brazil, Canada, UK, France, etc... in 1945 before Independence itself.

Use SAVE when you want to update the lastly preserved or to revise an existing document or file with the latest content.

Whereas

Use SAVE AS when you are creating a new document/file or an existing document/file to a new location. This will keep the original document untouched in its original format and create a new document with a new name.

In the given options, all are the benfits of ozone. But, the main benefit of ozone is absorbing ultraviolet radiation from the Sun.