Olivia's+supply+and+demand

1. One time when my family was affected by supply or demand was when we went to get a chocolate bar for my birthday but the one that we wanted was not there!

2. One example of supply and demand @http://www.stuff.co.nz/business/industries/2420321/Air-New-Zealand-freezes-pay

3. One of the ways when advertisers try and increase the demand for a product is when they put adverts on T.V. and say that they are having sales or low prices.