They allow you to see how the continents were once placed together.
Answer:
Stockholm
Explanation:
The star is in Sweden, and Stockholm is the only city listed that is in Sweden
I need more info to help you.
Explanation:
Using a few inexpensive, energy efficient measures can reduce your energy bill and, at the same time, reduce air pollution. Heating and cooling systems use more energy than any other systems in American homes. Natural gas and electricity are used to heat most American homes, electricity to cool almost all.