Plastics break down into tiny pieces called microplastics and nanoplastics in the environment. These small particles can build up in plants and animals, moving up the food chain. Not much research has been done on how these tiny plastics affect land ecosystems. This review looks at how micro- and nanoplastics move through soil, plants, animals, and even humans. It also explores how these particles can enter cells and potentially harm human health. The review points out gaps in our knowledge and suggests areas for future research.