You need to upload pictures of the sources so we can see them :)
The roaring twenties happened
egocentrism
racism
Answer is I. Energy conservation
Shutdown your computer. Computers are some of the biggest energy users in office buildings. ...
2 Choose the right light. LED bulbs are the most energy efficient lighting option. ...
3 Eliminate vampire power: unplug idle electronics. ...
4 Use a power strip to reduce your plug load. ...
5 Turn off the lights.
