Articles
Pressure and Winds
Air has weights and it exerts pressure which varies from place to place. These variations are specified ion pressure belts. The pressure at different location of the world also varies in different seasons. This variation causes the movement of air called winds.
Weather and Climate
The temperature, atmospheric pressure, winds and precipitation are main elements of weather have an important effect on our lives. For example the houses we construct, the clothes we wear and the food we prefer mainly depend on weather and climatic conditions.
Demand, Supply, Price and Market
Demand for a commodity refers to the quantity of the commodity that a buyer is willing to buy at given price at given time. Individual demand is the quantity of a commodity that an individual buyer is willing to buy at the given price at given time.
Money, Banking and Insurance
Before money was invented people used to exchange goods for goods which was called barter system. There were many problems of barter system such as absence of a common measure of value, lack of double coincidence of wants, lack of space to store goods to exchange them for other goods etc. This prompted human society to discover money.