Much of the petroleum consumed in the last few decades has been extracted from relatively few locations around the world, because most of the world's easily accessible petroleum deposits are concentrated in these areas.
how has this continued petroleum extraction from selected areas over time likely affected petroleum resources on earth?
a. petroleum resources have been replenished as quickly as they have been extracted.
b. more petroleum is now available overall because extraction techniques result in the formation of more petroleum.
c. the distribution of petroleum has changed and less petroleum is now available overall.
d. the distribution of petroleum has not changed in any way, and there is the same amount of petroleum available now as there was in the past.