Pollution is the dirtying of our air, water and land by harmful substances. It mainly comes from factories, vehicles, and careless human activities. Air pollution harms marine life and makes clean water harder to find. Land pollution like littering and dumping waste, destroys natural habitats. Pollution also adds to climate change and damages ecosystems. We need stricter laws and smarter habitats to reduce it. If we act now we may be able to save this planet for future generations.