Notes and Study material for Exams
located where river meets the sea. the most productive water bodies in the world The complete salinity range from 0-35 ppt is seen from the head (river end) to the mouth (sea end) of an estuary Coastal lakes which have their connection with the sea through small openings are better known as lagoons or … Read more
Broad Physical Feature: Mountains, Plateaus, Plains, Lakes and Glaciers:- Landforms are the natural features and shapes existent on the face of the earth. Landforms possess many different physical characteristics and are spread out throughout the planet. Together, landforms constitute a specific terrain and their physical arrangement in the landscape forms what is … Read more
Introduction After the death of Harsha and up to the rise of the Palas, the history of Bengal is not clear. During this time, West Bengal was known as Gauda and East Bengal as Vanga. Bengal was subject to internal disorder, which has been termed as Matsyanyaya. Rulers of Pala Dynasty Gopala was the elected king … Read more
Addition of certain substances to the water such as organic, inorganic, biological, radiological, heat, which degrades the quality of water so that it becomes unfit for use. Putrescibility is the process of decomposition of organic matter present in water by Microorganisms using Oxygen. Water having DO (dissolved oxygen) content below 8.0 mg/L may be … Read more
Waves and Currents: Sculptors of the Earth’s Surface The Earth’s surface is a dynamic landscape, constantly reshaped by the relentless forces of nature. Among these forces, waves and currents play a pivotal role in shaping coastlines, eroding cliffs, transporting sediments, and creating diverse and intricate landforms. These agents of change, driven by wind, tides, and … Read more