Environmental pollution can be defined as any undesirable change in the environment that harms life or property. There are several types of pollution, including water, air, land, and noise pollution. Water pollution occurs when harmful substances contaminate bodies of water. Air pollution is caused by particles and gases suspended in the air from sources like vehicle exhaust and factories. Land pollution involves depositing waste that contaminates soil and groundwater. Noise pollution refers to unwanted sound that negatively impacts humans and other living things.