Question 1
Which of the following gases is not a greenhouse gas?
Methane
Sulfur dioxide
Carbon dioxide
Water vapour
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DP IB Biology: SL
Topic Questions
4.2 Carbon Cycling & Climate Change
Question 2
The carbon cycle is represented by the diagram below.
Identify process Y.
Photosynthesis
Combustion
Respiration
Fossilisation
Question 3
What is the total mass of carbon released into the atmosphere from respiration per year?
60 billion tonnes
148 billion tonnes
150 billion tonnes
140 billion tonnes
Question 4
A climate change sceptic made the following statement:
'There is no consensus amongst scientists that climate change is real, global warming is a natural and normal phenomenon which has occurred at other points in history'
Which of the following opposes the idea that global warming is a natural phenomenon?
The idea that many factors contribute towards global climate
Data produced by companies involved in global fossil fuel supply shows decreasing greenhouse gas production
Scientific research which links the combustion of fossil fuels with global warming
Published data which shows that rates of global warming have not been consistent over the last 50 years
Question 5
Which process results in the production of methane gas?
Combustion of fossil fuels
Livestock farming
Deforestation
Ocean acidification
