Examlex
Which of the following is the minimum daily amount of ascorbic acid that will prevent the appearance of scorbutic symptoms in human beings?
Oil And Gas
Natural resources that are extracted from the Earth and used primarily for energy and as raw materials in the production of chemicals.
Coal
A combustible black or brownish-black sedimentary rock formed from ancient plant matter, used primarily for electricity generation and steel production.
Oil Shale
Sedimentary rock that contains significant amounts of organic material in the form of kerogen, which can be converted into crude oil through heating.
Energy Resource
Any material or phenomenon that can be used directly or converted into other forms of energy to perform work.
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