Supply Demand shifters

The price of tacos increases, how will this affect the demand for burgers?

The willingness and ability of producers to sell a good at a given price

the new McDonalds is burnt down, what happens to hamburgers

its discovered that Volkswagen has been illegally smogging cars, what happens to the fiat cars

there is a sale on hotdog buns, how does this affect hot dogs

there will be a sale on Xbox systems next week, what happens this week?

New craze breaks out for wearing headbands

farm workers head to mexico for a vacation, what happens to apartments

the cost of toothbrushes increases, what happens to toothpaste

new studies show that green tea is good for your health

it is discovered that eating red meat helps you loose weight

a change in price 

workers at Driscols demand higher wages

new technology makes the production of toilet paper faster

the price of strawberries increases, what happens to chocolate

tourists flock to Tahoe to ski this winter, how does this affect lift tickets?

a new tax is added to cigarette production

The I phone 6S is released, how will this affect iphone 6's?

due to the drought farmers are given a subsidy for water, what happens to lettuce

a new pizza shop opens in town, now there are two

government increases the taxes farmers must pay, what happens to strawberries

A huge drought wipes out grapes, how will the affect the supply of grape jelly?

all of the following will shift a demand curve except

the law of demand:

all fo the following will affect supply except