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...
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
Target audience UPSC aspirants .SSC .CDS Railway etc.
Is biodiversity conservation really important??
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
Alien species invasions Some of thenm may turn invasive Eg introduction of Nile perch in to Lake Victoria in East Afrig ALIEN SPECIES INVASIONS Envirorn Recent example - illegal introduction of of the African catfish Clarias gariepinus damage caused and threat posted to our native species by invasive weed species
V Co - extinctions Zestos and Rockland grass skippers . When a species becomes extinct, the plant and animal species associated with it in an obligatory wav also become extinct Florida Hummingbird hawk moth drinking from Dianthus.
NARROWLY UTILITARIAN Direct economic benefits from environment like, Natural food (cereals, pulses, fruits) Firewood Fiber Construction material Industrial products (tannins, lubricants, dyes, resins, perfumes) Products of medicinal importance BROADY UTILITARIAN Biodiversity plays a major role in many ecosystem services that nature provides. Eg-pollination, Amazon-forest etc ETHICAL Every species has an intrinsic value, even if it may not be of current or any economic value to us. We have a moral duty to care for their well being and pass on our biological legacy in good order to future generations.
amb lavender Poppy opium More than 25% of drugs are derived from plants
Can we put an economic value on this service of nature??? More than 20% of the total oxygen in the earths atmosphere are produced by Amazon forests through photosynthesis How much does a hospital spends on a cylinder of oxyge :
25,000 species of plants contribute to the traditional medicines used by native peoples around the world. .Lets embrace ourselves to natured resources put Increasing resources put Philosophically or spiritually we need in th in to bio prospecting pecies ic Means exploring molecular, genetic and species - level diversity for products of economic importance Increase in economic benefits 2 Increase in mutual developments of living beings and environment
Pillai Sruthi P Kumar
I am a botany graduate from Ramnarain Ruia college, Mumbai university. Currently, a civil service aspirant. I am passionate about teaching.