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Global Warming Essay

3061 words - 13 pages

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The world contains seven continents which are all sub-divided up into smaller pieces and those are divided further and so on. Each of these places has its own weather which changes daily and also has its own climate; which is a more permanent season of weather that the region experiences. For years the climate for many places has begun to change and become warmer affecting anything that lives in the area. Some organisms have become endangered and some have died because they haven’t been able to adapt as fast as the rate of climate change. Many believe this to be what’s known as “Global Warming” and others argue that it’s just a coincidence that the earth is on a cycle and it’s at ...view middle of the document...

When the sun’s rays hit the earth, almost 70 percent is retained by the planet and is absorbed by land, oceans, and other living organisms. (Layton,Grabianowski) Some of the absorbed heat is later released and what remains is mixed with other natural gasses to form the greenhouse gasses. It’s not like all the radiant heat and gases are stored in the planet and only act as an insulator to heat the earth further. The earth naturally releases heat into space and continues the cycle.
Carbon dioxide levels are kept in balance by the plant life on earth. They take in the carbon and absorb sunlight and use the process, photosynthesis, to expel oxygen at the end. As humans began burning more and more carbon releasing fossil fuels, like petroleum, carbon levels began shifting out of balance. Humans are emitting too much carbon dioxide for plants to handle which is leaving excess gas in the atmosphere. The rate of carbon absorption to oxygen expulsion is no longer in balance. Before the Industrial Revolution, the carbon dioxide level was around 280 parts per million (ppm) and it has increased to 360 ppm just at the beginning of the 21st century (Scott). This means that the air we breathe every day is slowly increasing in the amount that directly consists of some carbon emission. This increase has led to around a 1.8 degree F (roughly 1 degree C) increase in earth’s temperature (Layton,Grabianowski). People

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may think big deal one degree Celsius isn’t going to do anything, but in actuality the earth can experience irreversible global effects at a two degree Celsius and greater increase. These could include melting ice sheets and ice caps, rising sea levels, flooding, climate pattern changes, and habitat destruction. Once the earth finishes through its warm cycle and starts a cooler cycle, this extra water will freeze again and make new ice caps.
“In the last 650,000 years the earth has gone through seven cycles of glacial advance and retreat, the last being the ice age about 7,000 years ago” (ARKive). The cycle’s fluctuations were a cause of variations in the amount of solar energy earth was receiving during its orbit. Since the earth orbits in an ellipse, the distance and angle it is from the sun will alter how much solar energy it receives. The current warming trend is imperative because of the potential wildlife destruction and impacts it could have on people. Earth’s population is over 7 billion now so people are contributing to the warming rate. The past 1,300 years have experienced a much higher rate than any before (“Evidence”). Satellites have shown in ice cores in places like Greenland and Antarctica that climate changes that usually take thousands or millions of years are happening in tens of years. Sea levels rose only 6.7 inches in the last century but that rate has almost doubled in just the last decade (“Evidence”). Thinking about what happened in 100 years is now happening in 10 and that the rate is doubled is astonishing. The...

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