It is important because the body needs energy from glucose,
glycogen phosphorylate, with the help of an orthophosphate, can cleave away a
molecule from the glycogen chain. The cleaved molecule is in the form of
glucose-1-phosphate, which can be change into G6P phosphate.
The good thing about a dam is that electricity can be created by mechanical means. That does not affect the atmosphere. Storing such production is a different matter.
The bad thing about a dam is that it wreaks havoc on the land where the water is stored behind the dam.
