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Law of Substitution The law of substitution is also known as the law of equi-marginal utility or the law of maximum satisfaction. This law was…

Chalcopyrite Definition – Chalcopyrite is a brassy yellow, metallic, tetragonal mineral, usually occurring as shapeless masses of grains and a hardness of 3.5 to 4…

Mercury poisoning is the ill effects on human’s nervous system and other bodily systems due to the over-exposure of mercury. Mercury is a neurotoxin, meaning…

Anosmia Definition Anosmia is loss of the sense of smell. It is also called olfactory anesthesia. It may be a temporary issue, but some forms…

Top 10 Highest Paid Actors in 2017 A gender pay gap persists in Hollywood, even among elite earners: The top 10 actors banked a cumulative…

Antimony Definition Antimony is a metalloid element having many forms, the most common of which is a hard, very brittle, shiny, blue-white crystal. Antimony compounds…

Effects of Lead on Human Body Lead is a naturally occurring toxic metal found in the Earth’s crust. Its widespread use has resulted in extensive…

Valence Electron Definition Valence electron is an electron in one of the outer shells of an atom that can participate in forming chemical bonds with…

Lead poisoning Lead is a very strong poison. When a person swallows a lead object or inhales lead dust, some of the poison can stay…

Ethmoid Bone Definition Ethmoid bone is exceedingly light and spongy bone that provides the floor of the front part of the skull and the roof…

The law of substitution has several limitations as follows: The law of substitution is also known as the law of equi-marginal utility or the law…

Chalcanthite Definition Chalcanthite is a secondary mineral, which is natural, water-soluble copper sulphate (CuSO4·5H2O) and that is formed in arid climates or in rapidly oxidizing…