Metal works is very helpful to all
now a days every thing is containing metal properties.
there is also lot of problems in production of metal products.
some times in process of extraction of iron from different compounds
there is lot of chemicals there that are very dnagerous to human skin
and it is weighed before adding in mixture of different metals
some times it mix in very high quantity so there is some extraordinary things are appeared
40 years ago, women used to score 50 points lower on the Math portion of the SAT than on the Verbal. Today, their Math and Verbal scores are nearly identical on average.
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