With these questions you. 1. why do fuel prices increase? a. fuel companies want to make more money b. increased cost of transportation c. decreased supply of fossil fuels d. increased supply of fossil fuels 2. how can consumers use less fossil fuels? a. drive more often b. increase electricity use c. carpool to work d. buy, bigger, heavier automobiles 3. what type of fuel makes up biodiesel? a. gasoline b. vegetable oil c. coal d. diesel 4. how does supply and demand work? a. as supply increases, demand increases b. as demand decreases, supply decreases c. as supply decreases, demand increases d. supply and demand are equals always 5. all of the following are incentives for individuals to start using more efficient fuels except: a. tax credits up to $4000 b. use of high occupancy vehicle lanes c. free gasoline for hybrid cards d. energy savings for using solar panels to heat for the home