Global warming occurs when carbon dioxide (CO₂) and other air pollutants and greenhouse gasses collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth’s surface.

Normally, this radiation would escape into space—but these pollutants, trap the heat and cause the planet to get hotter. That's what's known as the greenhouse effect.This is the main cause of global warming . 

Universal Adult Franchise means that the right to vote should be given to all adult citizens(above 18 years of age) without the discrimination of caste, class, colour, religion or gender. It is based on equality principle of democracy.

In Hunsgi tools were made of Limestone.

Earth has a unique magnetic field which protects the earth from the harmful solar winds.Earth's atmosphere is favorable to support life on earth. This atmosphere consists of different gases in adequate amount. The earth has life supporting gases like oxygen,because of these reasons the earth is a unique planet in the solar system.

1. Good manner means having polite or well-bred social behaviour by the people.
2. Having good manners in life matters a lot for living a social life.
3. It should be inculcated especially in children from childhood.
4. Behaving in well or bad manner is the most important part of the human nature and life.
5. Good manners help us in getting respect and dignity in the society whereas bad manners defame us.
6. Good manners help us to develop good habits
7.   Good manners improve the physical, mental, spiritual and social developement and wellbeing  of person.
8. A well behaving man, having all the good manners, is becomes the important citizen in the society 
9. He never hurts the feelings of others.
10. Good manner is the well behaving manner of the person which adds good impression on others as well as gives good feeling and confidence about oneself.

Earth is considered to be in area known as the “Goldilocks Zone” around our Sun. It is just the right distance away from our Sun to allow just the right amount of air, water and heat to support life.Life is possible on Earth because of its relative position with respect to the sun that it has life-providing molecules to move around easily. Water on Earth can be found anywhere, in its three states. Sunlight and photosynthesis processes are easily going on the Earth.

Sketch map is an outline map drawn from observation rather than from exact survey measurements and showing only the main features of the area.

Geography :the study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources and political and economic activities.

1. To understand basic physical systems that affect everyday life (e.g. earth-sun relationships, water cycles, wind and ocean currents).
2. To learn the location of places and the physical and cultural characteristics of those places in order to function more effectively in our increasingly interdependent world.
3. To understand the geography of past times and how geography has played important roles in the evolution of people, their ideas, places and environments.
4. To develop a mental map of your community, province or territory, country and the world so that you can understand the “where” of places and events.
5. To explain how the processes of human and physical systems have arranged and sometimes changed the surface of the Earth.
6. To recognize spatial distributions at all scales — local and worldwide — in order to understand the complex connectivity of people and places.

History:History (from Greek ἱστορία, historia, meaning "inquiry, knowledge acquired by investigation") is the study of the past as it is described in written documents. Events occurring before written record are considered prehistory.

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