Goosebumps are caused by the contraction of the tiny muscles attached to hair follicles. These muscles are arrectores pilorum muscles.

Swami Vivekananda had introduced yoga first time to western world in a religion conference Chicago, America in 1893.

C. Rangrajan has written the book Growth & Finance.

Glass is made from heating of sand. To melt sand to make glass, the temperature needed is above 1800 deg celcius.

A data dictionary is a special file that contains a set of information describing the contents, format, and structure of a database and the relationship between its elements, used to control access to and manipulation of the database.

Oligopoly is market structure where a small number of large firms are there. Oligopolistic industries are characterized by a few dominant firms and substantial entry barriers.

A tetrad is best described by Four chromatids. It is formed from two homologous chromosomes, each consisting of two chromatids in the first stage of meiosis called prophase1.

The only gem of world made of a single element is Diamond.