Question

what is bitumen ? and how it is used ?

Answer 1

Bituminous is a coal that has been buried deep and subjected to increased temperature.it is the most popular coal in commercial use.metallurgical coal is high grade bituminous coal which has a special value for smelting iron in blast furnaces.

Answer 2

vitamin and nutrients your body needs two function and fight half disease your body cannot produce vitamins itself so you must get them through food you eat or some cases supelliments there are 13 vitamins that are essential to your body working well to knowledge of the different types and understanding to proposed of these vatimans are important for good health
I hope you have satisfied