Pollution is the introduction of present elements into the natural environment that causes adverse effects on environment. Pollution can take in the form of chemical substances or energy, such as noise, heat or light. The components of pollution, can be either foreign substances/energies or naturally occurring contaminants. Different Types of pollution are categorized based on the part of the environment which they affect or result which the particular pollution causes. Each of these types has its own causes and consequences. It is most often used in an environmental concept like air or water pollution. But you will also hear phrases like polluting one’s mind, polluting a conversation, etc. there are mainly four types of pollution air, water, soil and land. OR Pollution is when water, air or land becomes very dirty. Air pollution affects the air, water pollution affects the water and marine life, land pollution affects the land destroying life and the environment and there is also noise pollution that can affect our hearing. Pollution is dangerous. It affects everything from land to water, air, noise and more. Really pollution is just like a devil. Harmful substances cause by everything. Pollution kills, so reduce it. Pollution is known as Presence of matter (gas, liquid, solid) or energy (heat, noise, radiation) whose nature, location, or quantity directly or indirectly alters characteristics or processes of any part of the environment, and causes (or has the potential to cause) damage to the condition, health, safety, or welfare of animals, humans, plants, or property.