موضوع من الملحق العلمي"is recycling a good idea why" Ezlb9t10
موضوع من الملحق العلمي"is recycling a good idea why" Ezlb9t10





 
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موضوع من الملحق العلمي"is recycling a good idea why"

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موضوع من الملحق العلمي"is recycling a good idea why" Clock13 2012-04-10, 9:55 pm


Recycling is the processing of used objects so that they can be used again . Most recycling
involves four main categories of products : metal , glass , paper and
plastic . Common metals such as iron can be melted down and reused .
This will help to conserve the nonrenewable resources .Recycling glass
is also easy and inexpensive because the recycled pieces melt at lower
temperature than the raw materials .Recycling paper also saves energy
and keeps the environment clean but not cutting new trees .The same
thing applies to plastic . It can be recycled and reused for many things
. Some materials cannot be recycled and there are not enough uses for
some recycled products .Finally , all recycling processes require energy and create some pollution .
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