Nancy has been to many countries such as England, France, Germany and Australia, but she has never gone to America. Therefore, when she was told that she could attend a business meeting in America, she decided that she wanted to go there and to 26 the country. As the meeting was to be held in Chicago, she first took a flight from Taipei to Los Angeles and then waited for a transit flight there. Unfortunately, by the time she arrived in Los Angeles, all the flights to Chicago had been cancelled because of a heavy storm. As Nancy was very 27 about not being able to attend the meeting on time, she asked the people at the check-in counter to help her solve the problem. But nobody could help her as they were all too busy 28 other customers' complaints. As a consequence, she had no choice but to stay in Los Angeles for the night. 

   Yet, the same thing happened to her the next day. She still had difficulty boarding a flight to Chicago. While she was worried about the possibility of missing the meeting in Chicago, an American sitting beside her suggested that she could, in fact, plan another 29 to get to Chicago. She followed the advice and boarded another airline for Chicago. She flew to Denver first, waiting for a transfer flight to Chicago. But she missed the plane because she wasn't 30 the time difference. She was put on a waiting list and had to wait for the next flight to Chicago. When she finally boarded the plane, she felt greatly relieved. Although it was already late in the evening when she arrived in Chicago, she was happy that she made it to Chicago after all!

   Solar is the first energy source in the world. It was in use much earlier before humans even learn how to light a fire. Many living things are dependent on solar energy from plants, aquatic life, and the animals. The solar is mostly used in generating light and heat. The solar energy coming down to the planet is affected by the orbital path of the sun and its variations within the galaxy. In addition, it is affected by activity taking place in space and on the sun. It was this energy that is believed to have been responsible for the breaking of ice during the ice age, which creates the separation of lands and sea.

   Solar energy is the alternative energy source that is used most widely across the globe. About 70% of the sunlight gets reflected back into the space and we have only 30% of the sunlight to meet up our energy demands. While the sunlight is used for producing solar energy, it is also used for drying clothes, used by plants during the process of photosynthesis, and also used by human beings during winter seasons to make their body warm.

   There are two kinds of solar energy, namely, the passive solar energy and the active solar energy. The passive solar energy basically uses duration, position, and the intensity of the sun's rays to its advantage in heating a particular area and also in inducing airflow from an area to the next. The active solar energy uses electrical technology and mechanical technology like collection panels in capturing, converting, and storing of energy for future use.
   Solar energy does not create any pollution and is widely used by many countries. It is a renewable source of power since the sun will continue to produce sunlight all the years. Solar panels, which are required to harness this energy can be used for a long time and require little or no maintenance. However, solar energy proves to be ineffective in colder regions which don't receive good sunlight. It cannot be used during the night and not all the light from the sun can be trapped by solar panels. Solar energy's advantages are much more than its disadvantages, which makes it a viable source of producing alternative energy