The process of making air, water, soil, etc. dangerously dirty, or the state of being dangerously dirty.

The time of day when the road and means of transport are most full, because most of the people are travelling to or back from work.

Food, paper, etc. that is no longer needed and has been thrown away.

A period of time when there is no electricity supply.

A large group of people who have gathered together to do something.

Rude, humorous, or political writing and pictures are on the wall or buildings.

An area of grass, trees, and vegetation set apart for recreational or decorative purposes in an urban environment.

What is in the picture?

The major cause of Air Pollution.

The events organized by groups or organization to clean up specific areas in their communities.

The Condition of being extremely poor.