Answer: The Control Group is the group that doesn't stretch.
————
Explanations:
When trying to identify the control group in an experiment, you must first identify what the "change" is because the group that the change applies to will be the experimental group. This experiment's change is stretching.
Using this logic...
Control Group: Non-Stretching Group
Experimental Group: Stretching Group
The key difference between LPG and CNG is what they consist of.
LPG consists of butane, propane and a variety of other chemicals, whereas CNG consists of mostly methane gas.
Answer:
Dialogue and commercial relations between nations is a proven way to reduce human conflict.
We can see this example in Europe, which has gone through countless wars, including the two World Wars of the twentieth centurie, where over 100 million people, between soldiers and civilians died.
After the end of World War II, Europe formed the European Coal and Steel community, which would eventually evolve into the European Union in 1993.
The European Union is primarily an economic union that has linked the European economis together, not only preventing war, but also making war costlier in case it happened.
Alright, a few are. Those countries are:
Iran
Israel
Turkey
Palestine