Polystyrene is a type of plastic that is widely used in various products. It is lightweight, durable, and can be easily molded into different shapes. Common items made from polystyrene include disposable cups, food containers, and packaging materials. It can be found in both solid and foam forms, with foam polystyrene often used for insulation and cushioning. While polystyrene is convenient, it has raised environmental concerns due to its non-biodegradable nature. When discarded, it can contribute to pollution, especially in oceans, where it poses a threat to marine life. Efforts are being made to find more sustainable alternatives to plastic products like polystyrene.