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The diagram shows the mass of carbon dioxide used and produced during one year - Edexcel - GCSE Biology - Question 3 - 2015 - Paper 1
Question 3
The diagram shows the mass of carbon dioxide used and produced during one year. (a) (i) Calculate the difference in mass of carbon dioxide used and produced by the ... show full transcript
Worked Solution & Example Answer:The diagram shows the mass of carbon dioxide used and produced during one year - Edexcel - GCSE Biology - Question 3 - 2015 - Paper 1
Step 1
Calculate the difference in mass of carbon dioxide used and produced by the plants and land.
Answer
To find the difference in mass of carbon dioxide produced and used by the plants and land, we will subtract the mass of carbon dioxide used (450 billion tonnes) from the mass produced (444 billion tonnes):
Step 2
Step 3
Suggest one effect of an increase in the mass of carbon dioxide produced in the atmosphere.
Answer
One significant effect of an increase in the mass of carbon dioxide in the atmosphere is global warming. This occurs because carbon dioxide is a greenhouse gas, trapping heat and leading to a rise in Earth's temperature.
Step 4
Explain why plants remove carbon dioxide from the atmosphere.
Answer
Plants remove carbon dioxide from the atmosphere primarily through the process of photosynthesis. During this process, plants utilize sunlight to convert carbon dioxide and water into glucose and oxygen. The glucose produced is then used for energy and growth.
Step 5
Suggest two ways of reducing the mass of carbon dioxide in the atmosphere.
Answer
Two effective ways to reduce the mass of carbon dioxide in the atmosphere are:
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Increasing the use of renewable energy sources such as wind, solar, and hydroelectric power, which produce little to no carbon emissions.
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Enhancing reforestation and afforestation efforts, as trees absorb carbon dioxide during photosynthesis, thus helping to lower atmospheric levels.