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Kin Yung 發問於 科學及數學化學 · 1 十年前

Help!!

except destorying the ozone layer,what are the other problems of using large amount of expanded polystrene?

explain why the destruction of ozone layer will cause harmful effects to human being

1 個解答

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  • 1 十年前
    最愛解答

    Except destorying the ozone layer,what are the other problems of using large amount of expanded polystrene?

    (1) Plastic waste in the sea poses direct danger to marine life. Fishes and sea animals have been found dead with their digestive tracts clogged by fragments of expanded polystyrene they had ingested. Sea animals have been suffocated to death by plastic bag.

    (2) Incineration of expanded polystyrene waste produces air pollutants such as carbon monoxide formed in incomplete combustion. Also, carbon dioxide formed in incineration is a green house gas.

    (3) Expanded polystyrene does not generally undergo decomposition in the landfill sites. Thus the waste can last for a long period in the environment.

    (4) The use incomplete expanded polystyrene would cause the ingestion of styrene monomers by human beings. Styrene is suspected to cause cancer.

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    Explain why the destruction of ozone layer will cause harmful effects to human being

    The ozone layer in the stratosphere filters out 99% of dangerous ultraviolet radiation from the sun. A thinning of the ozone layer may lead to an increase in the incidence of skin cancer and eye cataract, and a decrease in yield of crops.

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