Classification of Soils in India: Important Facts Soil is the uppermost layer of the earth’s crust capable of supporting life. Soil is the most important renewable natural resource. The major factors affecting the formation of soil are relief, parent material, climate, vegetation, and other life-forms and time. Besides these, human activities also influence it to
Volcanoes and Rocks: Important Facts Volcano: A small opening in the Earth’s surface from where lava, ash, dust, rock fragments, and other pyroclastics (very hot) material is ejected up to 1000 m in the sky. On the other hand, volcanism is the process through which magma and other pyroclastics material move from the heated interior
Energy Sources- Important Facts: Energy is required for all activities. It is needed to cook, to provide light and heat, to propel vehicles, and to drive machinery in industries. Energy sources can be classified as renewable and non-renewable resources. Renewable Resources: Also called a non-conventional source of energy. Renewable resources can be generated continuously in
Agriculture is the process of producing food for people, fodder for cattle, fiber and many other desired products by the cultivation of certain plants and the raising of domesticated animals (livestock). India is an agriculturally important country. Two-thirds of its population is engaged in agricultural activities. It is a primary activity. Types of Farming: Primitive
Atmosphere and its Structure: Our earth is surrounded by a vast envelope of air known as the Atmosphere. It is held to the earth’s surface by its gravity. The air is composed of tiny molecules of gases. A molecule is the smallest particle of a substance. These molecules move randomly in all directions in the
Structure of the Earth: Important Facts Important Terms: Geology- It is the science that deals with nature and earth history. Example- the study of rocks and stones; how the earth was formed, etc. Physiography– It is the study of physical patterns and processes of the earth. Endogenic Forces– Horizontal and vertical movements caused by the
Physiography of India- Himalayas Geological Divisions: A geological period is one of the several sub-divisions of geologic time enabling cross-referencing of rocks and geologic events from place to place. These periods form elements of a hierarchy of divisions into which geologists have split the earth’s history. The variations in the geological structure and formations leads
Download National Institute of Open Schooling (NIOS Book) For IAS Exam The Study of Geography as a Discipline Nature of Geography as a discipline. Changing Face of the Earth Earth’s interior and its Material. Dynamic surface of the earth. Evolution of Land forms due to internal forces. The work of running water and underground water.
NIOS Environmental Science Book For IAS Exam Environment through Ages Origin of Earth and Evolution of the Environment. Environment and Human Society. Degradation of Natural Environment. Ecological Concepts and Issues Principles of Ecology. Ecosystem. Natural Ecosystem. Human Modified Ecosystems. Human Impact on Environment Human societies. Deforestation. Contemporary Environment Issues Environmental Pollution. Environment and Health.
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