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12th ncert : causes of loss of biodiversity (alien species invasion & co - extinction) (in Hindi)
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This course includes biodiversity and conservation in simple language and in an easy way. It mainly concentrates on beginners to get them with their basics. It also aims to generate interest among the viewers on the topic and also learning with fun.

Pillai Sruthi P Kumar
Pursuing MSc (botany, Cytogenetics), Mumbai University. Youtuber#sruthipillai. Work as a Biofaculty @MtEducare (reputed institute) Mumbai

Unacademy user
Sir were there any important articles in the Friday review? If so, please specify because I didn't go through that part at all.
Raun Deb
3 years ago
thr is an articl on liberalisation and law commission's report thats wht u shud go thru..just go to hindu website and go to the editorials from the menu
Dinkar G
3 years ago
Thank you :)
Thank you so much Shivendra 😃😄 It means a lot to me
absolutely right 👏😄
  1. Pillai Sruthi P Kumar ' BSc. Botany (graduate) Graduate (Visharad) in Hindustani Classical Mu Trained Bharatnatyam Classical Dancer. A passionate speaker. . A civil service aspirant. Please do rate, review and recommend if you genuinely liked my will definitely make a difference in my life... Follow me through unacademy app for future notifications...

  2. Objective .This course will complete the remaining three chapters (12th ncert) part by part included in the portion of topic ENVIRONMENT' important for GS section of UPSC exam. The main objective is to explain the concepts as simply as possible, to clear the basics, especially focuses on beginners, and tries to generate an interest among viewers by being more creative. Source 12th ncert

  3. Target audience UPSC aspirants .SSC .CDS Railway etc.


  5. Habitat loss and fragmentation Organisms that require large territories are badly affected Most important cause driving species to extinction Eg- Tropical rain forest From 14% forest covering to 6% forest covering HABITAT LOSS AND FRAGMENTAT ION Migratory habits are badly affected Pollution being the cause of degradation of many habitats

  6. Tropical rainforests can be characterized in two words: hot and wet. Mean monthly temperatures exceed 18 C (64 F) during all months of the year. Average annual rainfall is no less than 1,680 mm and can exceed 10 m Though it typically lies between 1,750 mm (69 in) and 3,000 mm (120 in) This high level of precipitation often results in poor soils due to leaching of soluble nutrients in the ground. Tropical rainforests exhibit high

  7. V The Caspian Sea is the argest inland body of water in the world RUSSIA aral ra UZBEKIS accounts for 40 to 44% of the total lacustrine waters of the world. Caspian Sea TURKMENISTAN TURKE IRAQ IRAN V The coastlines of the Caspian are e Azerbaijan, Iran, Caspian Sea Kazakhstan Russia, and .Turkmenistan Amazon River

  8. Arctic Ocean The largest rainforests are in the Amazon River Basin (South America), the Congo River Basin (western Africa and throughout much of southeast Asi Arctic Ocean GREENLAND ASIA NORTH AMERICA EUROPE North Pacific Ocean North Atlantic Ocean North Pacific Ocean AFRICA Indian Ocean Smaller rainforests are located in Central America, SOUTH AMERIC USTRALIA South Atlantic South Pacific Ocean Madagascar, Australia and nearby islands, India, and other locations in the tropics. Guyana Suriname Venezuela French Guiana Colom Ecuador Brasil Paraguay

  9. Jammu & Kashmir CHINA hal Pradesh PAKISTAN TIBET Arunachal Pradesh Punja Uttaranchal Sikkim Del Ullar Pradesh Rajasthan ssam Bihar Manipur MeghalayaM Gujarat Madhya Pradesh oram West Bengal Tripura BAY O F BENGA L Orrisa Maharastra ARABIAN Andhra Pradesh SEA LEGENDS Goa Open Forest Dense Forest arnataka Tamil Pondicherry Nadu Kelala

  10. Nigeria Coast /Ghana Gabon Democratic Republic of Congo EUROPE NORTH AMERICA 84 ERIC SOUTH:AMERICA MRE USTRALIA

  11. Over exploitation Need turns to greed Over- exploitation of natural resources by human Hilsa shad OVER - EXPLOITATI ON catla Endangers continued existence if some commercially Over -harvesting of marine fish populations around the world Silver carp important species Grass carp

  12. Turisia Lake Victoria Algeria Libya Egypt MauritaniaMali Niger Cha Sudan Nigeria Ethiopia Cote roire Rep Republic of the Congo UGANDA Angola Lake Fietoria KENYA uth Cichlid TANZANIA