Air pollution and plastic waste are serious problems in many cities. People produce a lot of rubbish, and sometimes it ends up in rivers and oceans. This affects animals and plants.

Many countries encourage recycling and using public transport instead of cars. Some cities plant more trees and create parks to improve air quality. People can also help by using reusable bags and bottles and by avoiding unnecessary plastic.

Even small actions can make a difference. If everyone does something, cities and nature will become cleaner and healthier for future generations.