Environmental Impact Assessment (EIA)

Notification on Environmental Impact Assessment (EIA) of developmental projects 1994 under the provisions of Environment (Protection) Act, 1986 making EIA  mandatory for 29 categories of developmental projects. One more item was added to the list in January, 2000. environmental impact assessment statutory for 30 activities Environment Impact Assessment Notification of 2006 has categorized the developmental … Read more

 Geomorphic processes; Weathering, mass wasting, erosion and deposition,soil formation,Landscape cycles, ideas of Davis and Penck

  Table of content Weathering Mass Wasting Erosion and Deposition Soil Formation Landscape (Geological) Cycles Davis Cycle Penck Cycle Weathering   Weathering is the general term applied to the combined action of all processes that cause rock to disintegrate physically and decompose chemically because of ex- posure near the Earth’s surface through the elements of … Read more

Interior of earth,

  Most of the knowledge we have about Earth’s deep interior comes from the fact that seismic waves penetrate the Earth and are recorded on the other side.  Earthquake ray paths and arrival times are more complex than illustrated in the animations, because velocity in the Earth does not simply increase with depth. Velocities generally … Read more

Coastal Regulation Zone

 Act of 1991 To regulate development activity on India’s coastline The approach adopted by the first notification was to define the ‘High Tide Line’ and ‘Coastal Regulation Zone’ and thereafter specify the activities permitted and restricted in the vicinity of the CRZ This regulated zone was further divided into four categories (CRZ 1-4) as per permitted … Read more

Geological and Physiographic divisions of India

Three Geological divisions: The peninsular block The Himalayas and other Peninsular Mountains Indo-Ganga-Brahmaputra Plain   Peninsualar block is made of gneisses (metamorphic) and granites (igneous). Six physiographic divisions: The Northern and North-eastern Mountains The Northern Plain The Peninsular Plateau The Indian Desert The Coastal Plains The Islands Northern and North-Eastern Mountains Approximate length of the … Read more

Immunity and Vaccination

Immunity is disease resistance and is of following two types:- Natural or Innate Immunity:- It is present from birth and is inherited from birth by the offspring from the mother.In this form of immunity the response from the organism against the pathogen is immediate in the form of non-specific immune response without the need of recognizing the … Read more

Population growth, distribution and density

  India is the second most populous country in the world next only to China. On March 1, 2011 the total population of India was at 1.247 billion. This accounted for 17.5% of the world’s total population. In other words, about every sixth person in the world there is an Indian. China, the most populous country … Read more

Mineral Resources of India:-Metallic Minerals

 Mineral  State  Mines/Districts Coal Jharkhand Jharia, Bokaro, Giridh, karanpura, Ramgarh, Daltonganj, Aurangabad, Hutar, Deogarh, Rajmahal Orissa Talcher, Rampur M.P (Former) Central Indian Coalfields -Singrauli, Sohagpur, Johilla, Umaria Satupura Coalfields – Pench, Kanhan, Pathkhera North Chhattisgarh – Chirmiri-Kaurasia, Bisrampur, Jhillmili, Sonhat, Lakhanpur, Sendurgarh, lakhanpur-Ramkola South Chhattisgarh-Hasdo-Arand, Korba, Mand-Raigarh West Bengal Raniganj, Darjeeling Andhra Pr. Singareni, Kothgundam, … Read more

ESTUARY ECOSYSTEM

  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