Global Warming

Topics: Carbon dioxide, Earth, Oxygen Pages: 3 (992 words) Published: February 12, 2014

Approximately every 100,000 years Earth's climate warms up temporarily. The Earth is in a warming period since the Ice Age. The warming periods called glacial periods cause the Earth to retrogress back to a cold ice age climate after a couple of years. This leads to the growing debate of today, Is global warming caused by humans? Or caused naturally? This is a controversial issue and debate today, however, global warming is not man-made, in fact, it is a normal and natural cycle for the Earth and the carbon dioxide levels are completely normal Earth goes through long periods of warming and cooling ages; it is the Earth’s recovery cycle. Many people believe that global warming is man-made due to the greenhouse effect. The greenhouse effect is the theory that the atmosphere has obtained too much of the greenhouse gases, like carbon dioxide. These gases are causing the Earth to overheat itself, hence, global warming. Often times, history repeats itself. This is true in life, in war, and in the Earth’s cycle. In the 1970’s many environmentalists were concerned about “global cooling” because of manmade atmospheric pollution blocking out the sun, which would freeze the earth, kill all life forms, and make Earth completely uninhabitable. A more active sun means a warmer Earth. The sun affects the Earth by radiation and convection. The sun is a huge ball of gases. It has a diameter of 1,392,000 km. It is so huge that it can hold millions of planets inside it. The Sun is mainly made up of hydrogen and helium gas. The surface of the Sun is known as the photosphere.. Without the Sun, life would not exist. There would be no plants, no animals and no human beings. As, all the living things on Earth get their energy from the Sun for their survival. Obviously, this is part of Earth’s cycle, if it was not for this cycle, well then we would still be living in the ice age because the glaciers would have never melted to begin with. It’s a pattern. A pattern that we must...
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