Change in the Demand Enviornment

Consumer Income
If the general public all gain raises, the total number of revenue and number of people being able to stay in the tree will move further away from 0. Now if half the public lost their jobs, not only will the opposite of what i just said will happen but also not a lot of people will be able to stay in the tree as the price goes up.

 

Consumer Tastes
FAD diets all came one after the other and people really took a liking to them. but as studies started to show that FAD diets dont work, the publics taste in wanting to loose weight fast came to a dead end. This caused the market schedule for FAD diets to drop and training systems provided by gyms and jenny craige went up as much as FAD diets droppedSubstitutes
Gas is not a very good example but im using it as an example because once it became painfully obvious to people that gas is not gunna get any lower, electronic cars came into the picture. that market schedual went up way more than it would have originally if gas was not expensive.

Compliments
as peanut butter got cheaper and the market rose for it, jelly was right hand in hand with the peanut butter. both of their market scheduals got a great increase from the number 0

Number of Cusotmers
Cancer has only gotten worse, now there is only half of the original population there once was. leaving market scheduals to decline in the number of people being able to buy the product. once everyone with cancer died cancer seesced to exist and a unicorn placed more and more people back leaving the market to boom in this creative baby boom expirence i just made up because of the bell ringing :)