Answer Fast ,Std 8th Chapter 17 = Man Made Materials (pLz use Reference Book Like Unique) , Question No.5 SUB Question -b and QUESTION No.6 Sub Question a,b and c. urgently needed
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I am of class 6th.I don't know.
ADREW9999:
Ok your answer
Plastic effect human health . Toxic chemicals leach out of plastic and are found in blood and tissue of nearly all of Exposure to them is linked to cancers,birth defects,impaired immunity and endocrine disruption.
effects of Glass on the environment. the glass is just like and other material that is made by you human affects the environment some way. the glass is a polluting material, the whole process of glass making is very dangerous to the environment because those factories are polluting the air which toxic gases.
thermocol response slowly to bacterial
thermocol response slowly to bacterial decomposition in the soil, thus making the soil infertile. it also releases poisonous gases on burning which can cause respiratory problems or even when inhaled.hence thermocol is harmful for environment
bhai sorry Upar mazak Kiya
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4r principal use fot it
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