oil price rises oil price declines agricultural prices rise agricultural prices decline copper price rises copper price declines fish price rises fish price declines electronics prices rise electronics prices decline Event or situation Price change A hurricane destroys many offshore oil rigs and on- shore refineries oil prices Fish hatcheries produce many tons of once-scarce food fish Fish price increase Electronics firms fix prices on their goods Electronics prices decline Millions of people buy fuel-efficient cars oil prices decline The government prosecutes electronics firms' price- fixing Electronics prices increase Most copper mines are nearing depletion copper prices declines A growing world population demands more food than agriculture can provide agriculture prices declines Huge new copper deposits are found copper prices rises