Microplastics are small plastic pieces less than five millimeters long which can be harmful to our ocean and aquatic life. … Plastic debris can come in all shapes and sizes, but those that are less than five millimeters in length (or about the size of a sesame seed) are called “microplastics
Microplastics cause damage to human cells in the laboratory at the levels known to be eaten by people via their food, a study from the University of Hull has found.
Scientists have since seen microplastics everywhere they have looked: in deep oceans; in Arctic snow and Antarctic ice; in shellfish, table salt, drinking water and beer; and drifting in the air or falling with rain over mountains and cities. These tiny pieces could take decades or more to degrade fully. It’s almost certain that there is a level of exposure in just about all species including humans.
reference: https://www.nature.com/articles/d41586-021-01143-3
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