Question

​The world is not about to run out of oil because we can rely more on unconventional heavy oil from depleted oil wells and other sources. However, these sources of oil will likely result in ____, higher environmental impacts, higher production costs, and higher oil prices.

a. ​increased international conflict

b. ​decreased production

c. ​lower net energy yields

d. ​greater technological input

e. ​increased CO2 output

Answer

This answer is hidden. It contains 101 characters.