• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Is human activity responsible for increased global warming?

Extracts from this document...

Introduction

Is human activity responsible for increased global warming? In this report the question that I will try to be answering is: 'Is human activity responsible for increased global warming? Firstly, there are two sides to the above question; either humans are responsible for the increased global warming or rather it is nature. It is a certain fact that the Earth's temperature is increasing; however not all people agree that humans are the causers of global warming; some people agree that it is nature who is the actual perpetrator. On the one hand some people may say that humans are the result for the increased global warming. Global warming is caused by the rising amount of greenhouse gases in the atmosphere. Greenhouse gases are gases such as carbon dioxide (CO2), Methane (CO) and nitrogen oxide, there are other gases which are included, but these are the major ones. Numerous human activities, such as burning of fossil fuels are factors which increase the amount of greenhouse gases and thus result in global warming. The graph below shows the fossil fuel combustion between different countries from the year 1900 to the year 2000 The trend in the graph is apparent; the fact that countries/continents around the world have increased their usage of fossil fuels has been a major contribution to global warming; fossil fuels contribute to global warming through the release of carbon into the atmosphere; carbon consequently reacts with oxygen in the air, thus creating carbon dioxide. ...read more.

Middle

The USA is accountable for 23% of the world's carbon dioxide emissions and therefore the country is responsible for major change to the atmosphere and the increased global warming; additionally we can see the millions of carbon dioxide that is pumped yearly, into the Earth's atmosphere. As I explained before how carbon dioxide affects global warming, we can comprehend, just how effective that human activity is on destroying the environment and atmosphere. Cars have similar effects as that of burning fossil fuels; the fact that humans are emitting millions of tons of carbon dioxide through the use of cars further depicts just how exponentially the Earth's atmosphere is getting destroyed. Nitrogen oxide is another well known gas that affects the atmosphere; it is said that oxides of nitrogen have three hundred times more heat-trapping capacity per unit of volume than carbon dioxide. Nitrogen oxides are released every time we apply fertilizer to soil. Even though the use of CFCs, such as in refrigerators, was banned long ago, the ramifications are still seen today; the reason for this is because once CFCs are released into the atmosphere, they begin a chain reaction and therefore the CFCs within the atmosphere and ozone layer take a long time to be removed. CFCs are many times more potent than carbon dioxide and even though (as I said before) they were banned long time ago, they still continue to contribute to global warming because they destroy the ozone layer; the ...read more.

Conclusion

Furthermore, methane is a byproduct of natural biological processes in mammals. * What's more natural solar activity is a contribution to global warming. The emissions of heat from the sun fluctuate over short and long term periods. Moreover, sunspots (Changes in the Earth's solar radiation levels) and solar flares have the ability to increase the amount of energy reaching the Earth over a wide spectrum, including UV light. * Evaporation of ocean water has shown to release numerous chemicals that either directly or indirectly contributes to global warming. It is a fact that the oceans contain more carbon dioxide than the atmosphere and release of carbon dioxide is common, especially in warmer waters. * Volcanic activity is probably the largest producer of naturally occurring greenhouse gas emissions. There is proof that volcanic eruption has released terrific amounts of carbon dioxide. Methane tends to be also released from volcanoes, but more intensely during warmer seasons. Recently scientists have found that the Earth goes through a temperature cycle and usually his climate change usually lasts about 40,000 years. The graph shows how global temperatures have changed over the past 160,000 years: This is evidence that naturally there have been changes in Earth's temperature and we just happen to be in the age where nature has warmed up the Earth. The graph shows some inconsistences and anomalies such as the data on temperature about 130,000 years ago and about 15,000 years ago ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our GCSE The Earth and Beyond section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related GCSE The Earth and Beyond essays

  1. Human Impact On the Environment

    They agreed that they will do this by changing the methods that are used to produce power to methods that release fewer amounts of carbon dioxide. The leaders from different countries agreed that they will try and produce energy in ways that release fewer amounts of green house gases into

  2. A report on Climate Change

    Why is Carbon Dioxide so important? The graph shown illustrates the percentage of each greenhouse gas found in the atmosphere today. It is clear that carbon dioxide is the main pollutant in the atmosphere, and this is probably because that everyday millions of people uses excess CO2 around the house, sitting in traffic or at work.

  1. Global Warming Casestudy

    (Overpopulation problem solved) 2. There would be more fresh water available for irrigating desert lands. (Food Shortage solved) 3. There would be more arable land to grow crops. (Food Shortage solved) 4. There would be milder winters. (Heat fuel shortage solved) 5. There would be milder winters. (Less sickness) 6.

  2. Free essay

    Pollution and Global Warming report.

    The removal of trees and deforestation is also thought to increase the greenhouse effect. Trees absorb carbon dioxide and produce oxygen. When they are removed, less carbon dioxide is absorbed, more is present in the atmosphere, and the greenhouse effect worsens.

  1. Is Global warming Natural or Man-made?

    Global warming- Man made - The Science In 2007 many scientists said that global warming was caused by humans. Many of this was caused by combustion of carbon based fossil fuels. These gases are also part of the greenhouse gas family, for example carbon dioxide, methane and nitrous oxide.

  2. Are humans to blame for Global warming or is it a natural phenomenon? ...

    This would warm the earth and is vital for life on earth and their processes. However not all the radiation that passes the atmosphere is absorbed by the earth. Some of it is reflected by the earth and goes back into the vacuum of space.

  1. Chemistry- Earth, its structure and atmosphere

    of South America fits the west coast of Africa, like pieces in a jigsaw puzzle * matching rock formations and mountain chains are found in South America and Africa Why wasn't Wegener's theory not accepted for million of years.....? It took more than 50 years for Wegener?s theory to be accepted.

  2. Are Humans causing global warming?

    needed to produce larger quantities of items quicker and faster, meaning that the use of carbon dioxide would have increased because of this excessive use. A final possible reason why the total co2 emissions suddenly rose is that the war started in 1914, around the time of the increased carbon

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work