Here is an essay on ‘The Himalayas’ especially written for school and college students. The fauna of Himalayan sub-region resemble of both the Oriental and Palaearctic regions. The animals such as Tiger, Leopard, Bear, Wild pig and Snow leopard are found on both sides of Himalaya in the Palaearctic and Oriental regions. It seems that these animals might have migrated [...]
In this article we will discuss about:- 1. Objectives of Radioactivity Theory 2. Bases of the Radioactivity Theory 3. Mechanism 4. Evaluation. Objectives of Radioactivity Theory: Joly postulated his theory based on radioactivity of certain radioactive minerals in the year 1925 in his book, 'Surface History of the Earth' to account for the origin and evolution of surface features of [...]
In this article we will discuss about:- 1. Objective of Plate Tectonic Theory 2. Base of the Plate Tectonic Theory 3. Mechanism 4. Evaluation. Objective of Plate Tectonic Theory: Plate tectonic theory is a comprehensive theory which offers explanations for various relief features and tectonic events viz. mountain building, folding and faulting, continental drift, vulcanicity, seismic events (earthquakes) etc. The [...]