The law of conservation of energy is an important law of physics. Basically, it says that while energy can turn from one kind into another, the total amount of energy doesn't change. This law applies only to closed systems, meaning systems that can't exchange energy with their environment
The third sentence.
Using an opinion in an informative piece is always wrong!
Marbury v. Madison = B
McCulloch v. Maryland = A
Gibbons v. Ogden = C
