Nina D. S. 
Renewable energy sources can be classified into five categories:
solar, wind, water, biomass, and geothermal energy. Apart from geothermal, all these energy sources are caused by the sun. Biomass is any organic substance, which retains the energy created by the sun in the process of photosynthesis. The sun sends a huge amount of energy into space. Approximately one-third of the sun’s energy coming to earth is infrared light (heat rays).
Climate change has become one of the biggest challenges for the sustainable development of civilization. It is causing unpredictable climate events in the form of extreme floods, droughts, and heat shocks. Sustainability and resilience goals can be in serious conflict if not previously met align carefully. They need to harmonize the goals of sustainability and resilience.
China is one of those tempting and exotic countries to travel to, but not open enough to foreigners. Therefore, it is one of the most challenging destinations for travel preparation and organization. Here, the previous experiences of people who have already visited play an essential role. Although Beijing is the capital of China, Shanghai is more popular because it is more developed. People often know that they call Sangai Chinese New York, and they are right. Whether you plan to travel to major cities or inland, China is a very safe country.
Here’s a list of the most beautiful places in Serbia, in my opinion. The list will be subjective because it is not possible to rank, objectively, places in Serbia. The natural beauties of Serbia have remained unexplored and unknown to many tourists. The country has to offer life in busy cities, as well as natural beauties. They are a breath of peace and tranquility. Whatever season you choose to tour Serbia, you are in the right place and at the right time. From north to south or east to west, either in spring or autumn. Serbia has attracted a large number of tourists in previous years.
