economics….400 words…needed in 12 hours or less

The following link will take you to an interactive graph of a competitive market.
1. Provide examples of a variable that affect the supply curve and a variable that affects the demand curve. 
2. Think of a product or service that use in your everyday life or workplace. Describe how the supply or demand of this product might be changed.
400 Words******
I need this in 12 hours please 
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