Best book for Indian Geography Upsc

Best book for Indian geography Geography is an important part of General Studies Paper 1 in Upsc CSE. The geography part comes with questions from World and India Geography that also consists of the Physical, Social, and Economic geography of the World and India. Geography is also one of the most taken optional papers in … Read more

Best books for upsc preparation in English

Best books for upsc preparation in English

Indian Polity The book “Indian Polity”, 6th edition is a must-read for the aspirants appearing for the Civil Services examinations as well as the other State Services examinations. Indian Art and Culture This book offers comprehensive and latest information covering the broad field of knowledge on Indian art, paintings, music, and architecture for the aspirants … Read more

Ecological Pyramid and its types Upsc

Ecological Pyramid The ecological pyramid is a graphical representation to show the relationship between various organisms at various trophic levels in an ecosystem. The concept of the ecological pyramid was first introduced by Charles Elton in 1927. The base of a pyramid is broad and its apex is narrow. The shape is the same for … Read more

Aquatic Zone

Aquatic Zone definition An aquatic zone is a region of a body of water that is characterized by its physical and biological features. Aquatic zones can be divided into a number of different types, based on factors such as depth, sunlight availability, and substrate type. Some of the most common types of aquatic zones include: … Read more

What are 5 food chain examples?

Here are 5 food chain examples: This is a simple food chain that can be found in many different ecosystems. The grass is the producer, the rabbit is the primary consumer, the fox is the secondary consumer, and the wolf is the tertiary consumer. This is a food chain that can be found in the … Read more

Energy flow in ecosystem Upsc

Energy flow in an ecosystem Energy flow is the flow of energy through various living organisms within an ecosystem. Every organism can be organized as a producer and consumer. The plants are producers and their energy is consumed by primary consumers (goat, cow, deer etc) and the primary consumer is consumed by secondary or tertiary … Read more


Biosphere Biosphere is part of the earth where we exist. It consists of a highly integrated and interacting zone comprised of atmosphere, hydrosphere and lithosphere. Biosphsre is absent in extremes of the north and south poles, highest mountains and deepest oceans. As it is hostile conditions that do not support life. The biosphere is the … Read more

* * All the Notes in this blog, are referred from Tamil Nadu State Board Books and Samacheer Kalvi Books. Kindly check with the original Tamil Nadu state board books and Ncert Books.