Global Climate Crisis in Your Classroom-project eTwinning
One way fish can swallow plastic is to think it's food
Ingestion of microplastics can be a danger to fish, as dangerous chemicals in plastic can be absorbed by them, which can affect their health, energy levels and ability to reproduce. Plastics can also carry bacteria from one environment to another, spreading pathogens among new defenseless host organisms.
In the case of viscose, it is not yet known whether it is a material in which hazardous chemicals remain concentrated. In fact, the real impact of this type of fiber on the environment is not yet known.
So far, all these cellulose-based fibers, such as viscose, have been ignored because they are considered natural. We don't have much information on how they decompose, so they could have a physical impact on fish we don't know about yet. These fibers could have a negative effect on fish or no effect, but I think it is safe to say that microplastics are unlikely to have any positive effect - the researcher added.
To study the contents of a fish's stomach, carefully remove the stomach and dissolve all the organic matter inside. Then pass the contents of the stomach through a filter to retain the plastic fibers. These fibers are studied under a microscope to identify the type of plasticsWhere does this plastic come from?
Washing machines release, on average, between 700,000 and 6 million fibers per wash. Wastewater treatment plants can prevent them from being released, but the fibers will end up in the ocean anyway from the sludge from the treatment plants, which is used as fertilizer. Fortunately, the introduction of improved filters in washing machines and treatment plants can reduce this source of plastic in the oceans.
Once the plastics reach the ocean, they can travel long distances. High-density plastic would be expected to sink and accumulate as sediment on the ocean floor, but currents and ingestion by fish and other animals can bring the low-density plastic into the depths and lift high-density plastic objects.
Waldorf School, Rm Valcea, Romania
Beste-Necmi Asfuroğlu Anadolu High School-Hatay/Turkey
her teacher-Lemia Sert
Causes / Consequences / Settlement measures
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