Answer:
Much of the following probably applies to many developed countries, and to richer regions of undeveloped countries as well. Some ways in which energy is wasted is: flying frequently (requires more energy than travelling by land or sea); driving in private cars instead of using public transportation (a bus uses more fuel in total, but much less fuel per passenger); using old-fashioned incandescent light-bulbs (which convert about 95% of the electric energy to heat instead of light).