Plastic is a synthetic material made from polymers, which are long chains of molecules. It is widely used in various applications due to its versatility, durability, and lightweight properties. Common types of plastic include polyethylene, polypropylene, and polyvinyl chloride (PVC). These materials can be molded into different shapes, making them ideal for packaging, construction, and consumer goods. Despite its usefulness, plastic poses significant environmental challenges. Many types of plastic are not biodegradable, leading to pollution in oceans and landfills. Efforts are being made to develop biodegradable alternatives and improve recycling processes to mitigate these issues.