Demand And Supply.

DEMAND :-
It is defined as the different quantities of a goods or services that consumers are willing and able to buy at different prices within a given period of time.It is an expression of consumers plans or intentions to buy.

Shifts Of Demand Curve:-
Tastes.
Income.
Number and price of substitute goods.
Information Symmetry.

SUPPLY:-
It is defined as the amount of product per unit time that producers are willing to sell at various given prices when all other factors are held constant.

Shifts Of Supply Curve:-
Input Costs.
Technology.
Number Of Sellers.