Please, read naturally.
I love the laws of thermodynamics, especially the first law. Energy is neither created nor destroyed. We are a part of nature. And we need energy and we have to utilize the natural resources of the earth in order to survive. I'd divide natural resources into two groups: inexhaustible and exhaustible. Most natural resources are exhaustible: for example, fossil fuels such as coal and oil. Humans have been searching for an alternative fuel supply, because using too much fossil fuel cause catastrophic changes such as acid rain, deforestation, widespread loss of water animals and so on. That is why, in my opinion, we have to find an alternative energy source within a short period of time. I hope that Man's mysterious brain will find the solution through using nanotechnology and biotechnology. And I also hope that mankind will get rid of its selfishness and will learn to love Mother Nature!
Great! Thank you!