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12th ncert : loss of biodiversity with examples of extinct species
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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

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Unacademy user
mam , Asiatic lions are found in the sub sahara region in Africa . Sub sahara region is the region in the southern part of Africa , i.e. the region below the Sahara desert . Some of these lions are also found in Girl national Park in Gujarat . kindly correct me if I. m wrong mam . thank you .
u r absolutely correct!😊😊 Good job👏👏
thanks
my pleasure😊
tropics are regions on the earth that surround the equater . there is more bio diversity in tropical areas maybe because of the prefect climate availability . it is neither too hot nor too cold . kindly correct me if I am wrong mam . thanks .
Thank you so much for taking your valuable time to answer Rashmi😊 u r right😊! jus would like to add few more points... Tropical regions r wet nd warm...it is due to its climate availability plus also it's constant temperature...less seasonal variations...it's predictable environment with more time for evolution😊😊 hope it helps u😊
thanks mam
my pleasure😊
  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 video...it 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.


  4. HUMAN ACTIVITIES


  5. Loss of biodiversity is the extinction of species (human, plant or animal) worldwide, and also the local reduction or loss of species in a certain hahitat Endangered Animais in India 1. Asian elephant 2. Tiger 3. Great indian one - horned Rhh 4. Asiatic Lion 5. Leopard 6. Snow Leopard 7. Tibetan Antelope


  6. PLANTS ANIMALS CATEGORY Critically endangered nilghiriensis (Pigmy hog) endangered Berberis Sus salvanisus Bentinckia nicobarica Ailurus fulgens (Red Panda) Antilope vulnerable CupressUS cashmeriana cervicapra(Blac k buck)


  7. Is the biological wealth of our planet declining??? Why??? The colonisation of tropical pacific islands by humanS IS said to have led to the extinction of more than 2000 species of native birds. MICRONESIA There are about 25,000 slands in the . Pacific Ocean. The islands MELANESIA entirely within the Pacific Ocean can be divided into three main groups known as Micronesia, Melanesia and Polynesia.


  8. 14 independent developing island nations of the tropical Pacific often with high endemism. V Cook islands V Fiji Papua new guinea Samoa Solomon islands Federated states of V Tonga Micronesia Tuvalu Vanuatu V Kiribati Marshall islands Nauru Niue


  9. Endemism is the ecological state of a species being unique to, a defined geographic location, such as an island, nation, country or other defined zone, the extinction of 784 or habitat type; organisms that are indigenous toeatelbtes, 359 are not endemic to it if they are also found elsewhereplants) in the last 500 According to IUCN Red List (2004) documents species (including 338 invertebrates and 87 years.


  10. Some examples of recent extinctions... Dodo(Mauritius) Quagga(Africa) Thylacine(Austral'


  11. The Invasive Species Council is an Australian environm ental non-governmental organisation Founded in 2002 Objective - to provide a specialist policy and advocacy focus on reducing the threat of invasive species that


  12. 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


  13. Consequences??? Decline in plant production Lowered resistance to environmental perturbations such as drought Increased variability in certain ecosystem processes such as plant productivity, water use, and pest and disease cycles.


  14. Causes??? There are 4 major major causes... 'EVIL QUARTET Habitat loss and fragmentation V over - exploitation Alien species invasions VCo - extinctions


  15. THANK YOU SO MUCH FOR WATCHING. HAVEA NICE DAY.