"Pollution..."

Explaining a new world to someone from another planet might be difficult but pollution is the introduction of contaminants into a natural environment that causes instability, disorder, harm or discomfort to the ecosystem, such as physical systems or living organisms. In other words, pollution harms our environment. I would explain what are the things that pollute our planet. Air pollution comes from both natural and man made sources. Though globally man made pollutants come from combustion, construction, mining, agriculture and warfare are increasingly significant in the air pollution equation. Motor vehicle emissions are one of the leading causes of air pollution. Another form of pollution comes from factories where they make things such as chemical plants, coal-fired power plants, oil refineries, petrochemical plants, nuclear waste disposal activity, incinerators, and large livestock farms. Pollution is bad and it is harming our planet. A lot  of people are not aware of this and I think that everyone should know. We should all take care of our environment and the things that were put here on Earth. I will tell them how to help my planet become safer, so there wont be more negative problems in this world.