In the early 20th century, the population of the world is 1 billion people. Reaching the early 21st century, it became 7 billion people. The increasing number of people resulted in the increasing number of supplies, places to live, and energy. Everyone needs food. Everyone needs house. Everyone needs energy. And ironically what human needs to survive resulted in a fenomena that will bring danger to themselves. That fenomena is called the climate change. Simply saying, it is the change of Earth’s condition such as temperature, rainfall, wind, humidity and weather. And climate change could result in global warming which is the rising temperature of Earth’s surface. This fenomena began to be a global issue since The First World Climate Conference in 1979, which identified it as an urgent problem and encourage other countries to aniticipate it and find ways to overcome this issue.
There are 2 factors that cause climate change. First, is natural cause which consisted of the volcanic erruption, ocean current, change of Earth’s orbital and solar variations. Second, is human cause. It goes without saying that human activities accelerate the climate changes. "There is strong evidence that the warming of the Earth over the last half-century has been caused largely by human activity, such as the burning of fossil fuels and changes in land use, including agriculture and deforestation" (The Royal Society 2010). Starting from the very simple activities, which are using air conditioner, hair dryer, switch on lamps, cooking with microwave and so on, people are helping to emit carbon gas emmision. Not to mention burning fossil fuels to produce energy, deforestation to build buildings, driving vehicles in the street and agriculture to produce foods, all these activities emit to the climate changes as they produce carbon dioxide, methane, water vapur, ozon, Chloro Fluoro Carbon (CFC) and nitrous oxide. In 2008, total worldwide energy consumption was 474 extrajoules. The...
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