Changes in the social system inevitably occur with time.

Social justice means that all people are treated equally.

He is deeply interested in social issues.

He used to be a member of the Chinese gang.

He experienced the harsh reality of the underbelly of society.

The United Nations Environment Programme is providing solutions to global environmental problems.

This document contains environment-dependent characters.

We are planning to visit the nature reserve this weekend.

I'm sorry, but I don't speak Japanese.

I'm a Muslim, so I fast during Ramadan.