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Chapter 1 part-9 Aquatic Zones - freshwater ecosystem and Marine ecosystem
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Different aquatic zones

Aartee Mishra is teaching live on Unacademy Plus

Aartee Mishra
Delhi University Topper Post Graduation in History YouTube & Telegram Channel - Rank secure. Successfully Taught 40 GS Batches/ Motivator

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question 13th .. ans is Anne Besant ...plz clarify
Kadambini Ganguly was indeed the first woman to address the INC session. She was one of the six female delegates to the fifth session of the Indian National Congress in 1889, and even organised the Women's Conference in Calcutta in 1906 in the aftermath of the partition of Bengal. In 1908, she had also organised and presided over a Calcutta meeting for expressing sympathy with Satyagraha – inspired Indian labourers in Transvaal, South Africa. She formed an association to collect money with the help of fundraisers to assist the workers.
This question is about addressing the INC, not preside over the INC session. Be careful there... Annie Besant was indeed the first woman President of INC.
hello aartee's me Tej prakash joshi. I am preparing for UPSC. I would like to say about current affairs. .we needs subject wise current affairs. please make for us mam. god will be blace you. ..thanks
thanks a lot Ma'am for extensive coverage
mam plaza mujhe ncert series join krna h an kb se start hoga plzzz tell me mam i need this
  1. Environment Book Summary Presented B Aartee Mishra

  2. Aquatic Biomes . Freshwater Lakes and Ponds Streams and Rivers - Marshes and Swamps Marine - Oceans Coastal wetlands

  3. Desert . Region Continental interiors with very low and sporadic rainfall with The flora is drought resistance vegetation such as cactus, euphorbias, Aquatic Zones low humidity. The days are very hot but nights are cold. sagebrush. Fauna: Reptiles, Mammals and birds. Aquatic systems are not called biomes, however they are divided into distinct life zones, with regions of relatively distinct plant and animal life. The major differences are due to salinity, levels of dissolved nutrients; water temperature, depth of sunlight penetration Fresh water ecosystem are classified as lotic (moving water) or lentic (still or stagnant water). Lotic water system includes freshwater streams, springs, rivulets, creeks, brooks, and rivers. Lentic water bodies include pools, ponds, some swamps, bogs and lakes. They vary considerably in physical, chemical and biological characteristics.

  4. AQUATIC ECOSYSTEMS They can be... MARINE FRESHWATER They can be... Coral reefs Flowing Water Rivers and streams Standing Water lakes and ponds Shoreline Wetlands Open ocean

  5. Marine Ecosystem Nearly three quarter of earth's surface is covered by ocean with an average depth of 3,750 m and with salinity 35 ppt, (parts per thousand), about 90 per cent of which is sodium chloride. Estuaries -Coastal bays, river mouths and tidal marshes form the estuaries. In estuaries, fresh water from rivers meet ocean water and the two are mixed by action of tides. Estuaries are highly productive as compared to the adjacent river or sea Biosphere Biosphere is a part of the earth where life can exist. Biosphere represents a highly integrated and interacting zone comprising of atmosphere (air), hydrosphere (water) and lithosphere (land). Life in the biosphere is abundant between 200 metres (660 feet) below the surface of the ocean and about 6,000 me"res (20,000 feet) above sea level.

  6. Estuaries Where Rivers Meet the Sea

  7. Biosphere is absent at extremes of the North and South poles, the highest mountains and the deepest oceans, since existing hostile conditions there do not support life. Spores of fungi and bacteria do occur at great height beyond 8,000 metres, but they are not metabolically active, and hence represent only dormant life. The energy required for the life within the biosphere comes from the sun. The nutrients necessary for living organisms come from air, water and soil. Biosphere Hydrosphere Biosphere

  8. The same chemicals are recycled over and over again for life to continue. Living organisms are not uniformly distributed throughout the biosphere. .Only a few organisms live in the polar regions, while the tropical rain forests have an exceedingly rich diversity of plants and animals.