How does plastics affect life on Earth? | Tamil
Channel: Lets Talk Some Science
Date: 2019-12-08

Plastic is material consisting of any of a wide range of synthetic or semi-synthetic organic compounds that are malleable and so can be molded into solid objects

The seven types of plastic include:
1. Polyethylene Terephthalate (PETE or PET)
2. High-Density Polyethylene (HDPE)
3. Polyvinyl Chloride (PVC)
4. Low-Density Polyethylene (LDPE)
5. Polypropylene (PP)
6. Polystyrene or Styrofoam (PS)
7. Miscellaneous plastics (includes: polycarbonate, polylactide, acrylic, acrylonitrile butadiene, styrene, fiberglass, and nylon)
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Microplastics are very small pieces of plastic that pollute the environment. Microplastics are not a specific kind of plastic, but rather any type of plastic fragment that is less than 5 mm in length according to the U.S. National Oceanic and Atmospheric Administration.
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Toxic effects

Chlorinated plastic can release harmful chemicals into the surrounding soil, which can then seep into groundwater or other surrounding water sources, and also the ecosystem. This can cause a range of potentially harmful effects on the species that drink the water.

Sewage

Sewage is an important factor in the distribution of microplastics. In fact, between 80 per cent and 90 per cent of the plastic particles contained in sewage, such as from garment fibres, persist in the sludge, says the study. Sewage sludge is often applied to fields as fertilizer, meaning that several thousand tons of microplastics end up in our soils each year. Microplastics can even be found in tap water.

Microbeads

Microbeads are solid plastic particles that typically range from 10 micrometers (0.00039 inches) up to one millimeter (0.039 inches).

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