Marble is metamorphosed limestone, composed of fairly pure calcite (a crystalline form of calcium carbonate, CaCO3). It is extensively used for sculpture, as an building material, and in many other applications.

Levee, any low ridge or earthen embankment built along the edges of a stream or river channel to prevent flooding of the adjacent land. Artificial levees are typically needed to control the flow of rivers meandering through broad, flat floodplains.

Congress session of 1919 held at Amritsar which is presided by Motilal Nehru.

As highest court in the State, a High Court supervises the subordinate courts in the State.

All India Anna DravidaMunnetraKazhagam (AIADMK) is an Indian political party in the states of Tamil Nadu and Puducherry. It is currently in power in Tamil Nadu and is the third largest party in the Lok Sabha. It is a Dravidian party and was founded by M. G. Ramachandran (popularly known as MGR) on 17 October 1972 as a breakaway faction of the DravidaMunnetraKazhagam (DMK).

It was started with Dandi March (also Salt march, Salt satyagraha) by Mahatma Gandhi on 12th March, 1930. On 12 March, 1930 he along with his 78 followers began a march from the Sabarmati Ashram to “Dandi” on the Gujarat coast. It was a distance of 200 miles. At Dandi a few days later they violated the salt laws by making salt from sea-water. Thus, began the civil disobedience Movement.

The Public Accounts Committee (PAC) is a committee of selected members of Parliament for the auditing of the revenue audit report of Comptroller and Auditor General (CAG) after it is laid in the Parliament.

The preamble indicates that the source of constitution is “we the people of India”.

The Speaker of Lok Sabha addresses his letter of resignation to the deputy speaker of Lok Sabha.

Ecology is the study of the relationships between plants, animals, people, and their environment, and the balances between these relationships.