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

Missin carbon footprints

Extracts from this document...


E.S.S. Human effect on the atmosphere Rhea Silva Dp-1, MBIS February, 2009 The case of missing carbon dioxide 1. What is the likely cause of the long term increase in carbon dioxide levels? One of the main reasons could be due to the increasing amount of the fossil fuels burnt today which contains crbon dioxide and as a result releases carbon dioxide upon combustion. 2. Explain the term 'carbon sink'. 'Carbon sink' is a place where carbon dioxide is absorbed or stored. 3. What evidence is given in the passage that the missing carbon dioxide ended up in the northern hemisphere? "There is good evidence that the missing carbon went north of the equator. ...read more.


Growth may be proportional to the air's carbon dioxide concentration in any year. We can age a tree by counting its rings, and the width of the rings can help us to estimate the carbon dioxide in the past years. 5. What does the passage suggest may be limiting factors to tree growth? The limiting factors to tree-growth are the lower concentrations of carbon dioxide, lower temperatures and fewer nutrients to build tissues. 6. What is it 'ironic' that the pollution from the fossil fuels may have caused tree growth to increase? It is ironic because the pollution from the fossil fuels or acid rain is often blamed for forest decline. ...read more.


9. Why may rising temperature and rising carbon dioxide concentrations be an example of positive feedback? Increasing temperature increases the rate of decomposition, raises the incidence of forest fires and kills trees, so increasing the rate of supply of organic carbon to decomposers. All these processes mean that more carbon dioxide enters the atmosphere, which enhances the greenhouse effect, thus raising the temperature. Graph questions: Calculate the percentage of total sea-level rise which is predicted to occur as a consequence of thermal expansion in 2050. 18/25=72% Suggest why the effect of global warming in Antarctica might lead to a decrease in sea-level. Global warming will result in higher atmospheric and sea temperatures, which increases rates of evaporation from the water. There will therefore be a decrease in sea-level. In addition, a warmer atmosphere is capable of holding more moisture. ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our International Baccalaureate Biology 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 International Baccalaureate Biology essays

  1. Extended Essay- How is production of carbon dioxide (CO2) during digestion affected by the ...

    was the highest with 18.6mL (?.1mL) of all the carbohydrates. Sorbitol (and artificial sweetener) was second highest with 16mL (?.1mL), followed by the organic sugar with 15.3mL (?.1mL), and finally the Truv�a (a natural sweetener) at 14mL (?.1mL) collected. This trend supports the previously mentioned sources, who all said that artificial or substitute sugars caused more gas in the body.

  2. Experiment - Influencing the Rate of Photosynthesis with Light Intensity and Carbon Dioxide Concentration

    The same procedure of counting bubbles for 5 minutes was repeated with the same sprig, except the distance measured between the lamp and test tube was 20 cm. A similar procedure was using the same sprig was done by measuring 5 cms between the lamp and the test tube.

  1. The effect of pvc piping on the breathing/heart rates of male year 12 students

    to rest for 3 or more minutes after all conditions are tested to allow the body time to correct oxygen levels. Carbon dioxide contamination Unconsciousness If the subject inhales and exhales into the tube carbon dioxide will not be recycled leading to carbon dioxide contamination in the body.

  2. Lung Capacity Fitness Level

    are some ethical issues that need to be discussed prior to testing. Therefore a briefing note is given to all participants before they are being tested. The briefing note outlines the aim of the experiment and the protocol for participants - participants are able to reject the experiment and are allowed to stop testing at any stage of experiment.

  1. Biodiversity of Ethiopian Forest

    = 22 Young Plantation Species Tally Species A 27 Species B 10 Species C 7 Species D 2 Species E 1 Species F 5 Total number of species= 52 Natural Forest A: Species Tally Podacapus 8 Juniperus 3 Little Juniperus 34 Group A 9

  2. The Carbon Cycle and Greenhouse Effect

    From 1950 to 1970, the gradient gets even steeper but within a shorter amount of time, 20 years. For the last detail of the graph, the gradient of the graph now get lowered in compared to the previous 20 years.

  1. Environmental Mangement - Upland Burning in Ireland and the Effects of the Heritage Bill ...

    Wildfires that occur in areas, which have been managed using prescribed burns, result in less overall damage. The need to reduce hazardous fuel accumulations surrounding forestry plantations is critical (C. Nugent, Personal Communication, 2017). Without fuel reduction in these areas, fire hazard is extremely high.

  2. Investigation Of Factors That Affect Carbon Dioxide Production In Yeast

    (See Evaluation for more details) With an increasing temperature from 10.00C to 40.00C, the reactions in which yeast respire and produce CO2 are facilitated with more energy that comes from heat, which happen faster and as a result, more CO2 is produced in the same amount of time (20 minutes).

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