There are several types of energy on earth. As we know fossil fuels have a large impact on the global environment.
It is also susceptible to the social conditions.
The use of fossil fuels will be restricted in the future. New energy and clean energy will always be needed in the near future.
We need to consider of clean energy, and new energy, and it will bring us a great asset to say the future.
Future study, we contribute to the global environment thought that we will do our best to develop natural energy.