Optionals IAS Mains Geography: Questions 1146 - 1156 of 1537

Extinction and the 6^th Mass Extinction

Extinction, basically is an evolution process that leads to the disappearance of species or a population broadly, classified into two categories, extinction can be

(a) background extinction, wherein species disappear at slow rate, as local conditions change

(b) Mass/episodic extinction wherein massive & concomita…

Discovery of the New Continent

• In the year , the discovery of a new continent Zealandia came as a major breaking news in the landscape of geomorphology.
• In a paper published by the “Geological Society of America” , the researchers say that Zealandia measured million square mules & was 94 % underwater.

• Researchers…

Milankovitch Cycles and Causes

In Order to explain the advancement & tether of ice sheets during Pleistocene ice age, a Serbian, Scientist Milutin Milankovitch, presented a model, based on 3 astronomical variables i.e..

(1) Eccentricity of the Earths elliptical orbit

(2) Obliquity of earth rotational axis

(3) Precession of equinoxes, i.e.. slow wobble …

UN Conference on the Human Environment (1972)

• Held in Stockholm, 5 - 16 June 1972.
• It was the first declaration of international protection of the environment.
• Stockholm Declaration contains 26 principles. These principles provide the basis of an International Policy for the Protection and improvement of the environment.
• Led to the establishment of the…