Biodegradable plastic is a type of plastic that can break down naturally through the actions of microorganisms, such as bacteria, fungi, or algae. This process can occur when the plastic is exposed to certain environmental conditions, such as sunlight and moisture, and can result in the plastic being broken down into natural substances that do not harm the environment. Biodegradable plastics are seen as a more sustainable alternative to traditional plastics, which can persist in the environment for hundreds of years and cause significant harm to ecosystems and wildlife.