11th Geography NCERT Chapter 2
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– Evolution of Atmosphere and Hydrosphere: Covers the composition and structure of the earth's atmosphere, including the three stages in its evolution and the contribution of the living world through photosynthesis.
– Origin and Evolution of Life: Discusses the origin of life as a chemical reaction and the evolution of life from unicellular bacteria to modern man.
– Origin and Evolution of the Earth: Explores the origin of the earth, early theories like the Nebular Hypothesis, modern theories like the Big Bang Theory, and the evolution of the universe.
– Evolution of Lithosphere: Describes the development of the earth's layered structure and the evolution of the lithosphere leading to the formation of the outer surface in the form of a crust .
What is the main contribution to the present composition of Earth's atmosphere?
What were the gases that the early atmosphere largely contained?
How do scientists refer to the origin of life and what is the process involved?
What is the 'Big Bang Theory' and how does it explain the development of the universe?
Describe the stages in the formation of planets as mentioned in the chapter.
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