 consumers and market demand for agricultural products. It is the consumers that create demand for agricultural products and then demand for agricultural products by all the individuals in the market creates market demand for agricultural products. When we say market demand it is the sum of individual demand and as you are very much familiar that just like the individual demand curve factors all those factors that shift the individual demand curve it also shifts the market demand curve. But at the same time market demand also changes when there is entry and exits of consumers in a particular market and it might be possible there is change in market demand because of change in factors over time. But the issue that we face whenever we make discussion about the market demand it is not possible for us to describe a true association between quantity demand and price with reference to market demand because there are many factors that changes in market when we study market demand. But even although we are not very much sure about the exact market demand it is useful to estimate the relationship between quantity demand and price for policy making to carry out forecasting and analysis. Theoretically whenever we study the consumer demand we study causation from price to quantity demand. It is the price that causes change in quantity demand but when we make discussion with reference to market in fact there is two way causation not only prices affects quantity demand quantity demand is also affected by price especially with reference to agricultural commodities. We can see this causation is running from both sides it is not only price that affects quantity demand it is quantity demand that also affects the price and when we say quantity demand affects price then in fact we are studying inverse demand function under ordinary demand function we study association between quantity demand as a function of price. But under the inverse demand function we analyze association where price is a function of quantity demand. In this diagram basically we are reporting here demand for beef and wealth economies under two time periods. In 1973 demand for beef is relatively high as compared to demand for beef in 2023. So over these two time period from 1973 to 2023 in developed economies there is a decrease in demand for beef this decrease in demand for beef may be because of awareness about red meat about the negative consequences of the red meat on the health of the people on the health of the consumers. And similarly if we observe demand for fruits enveloping countries we can see a significant increase in demand for fruits enveloping economies from 1973 to 2023. So the movement from the movement of demand from 1973 black color demand curve to orange color demand curve that will that indicate demand for fruits in 2023 indicates increase in demand again this increase in demand is because of awareness about the positive impacts of the food on the health of the individuals. So depending upon markets it might be possible in a particular market there is increase in demand for the commodity but in an other market it might be possible there is decrease in demand for that particular commodity over a period of time. And in this change in demand socio economic factors play an important role that is all.