The environment keeps being ever-shifting in adverse ways due to the development of human activities. Most notorious, global warming is caused by urbanization. For instance, people have exploited diesel fuel for decades, and tons of carbon dioxide have been created. As a result of it, the average temperate climbs continuously. The worse is that deforestation seriously happens, which makes the carbon dioxide less absorbed, in a bid to maximize the usage of the land. In the end, the higher sea levels rise, the more wildlife extinct.