The area of forest lost each year in Madagascar increased between 2009 and 2012 - AQA - GCSE Biology - Question 5 - 2018 - Paper 1
Question 5
The area of forest lost each year in Madagascar increased between 2009 and 2012.
Determine the total area of forest lost from the start of 2009 to the end of 2012.
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Worked Solution & Example Answer:The area of forest lost each year in Madagascar increased between 2009 and 2012 - AQA - GCSE Biology - Question 5 - 2018 - Paper 1
Step 1
Determine the total area of forest lost from the start of 2009 to the end of 2012.
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Answer
To calculate the total area of forest lost, we need to sum up the yearly losses from 2009 to 2012. Based on the data:
2009: 140 thousand hectares
2010: 240 thousand hectares
2011: 380 thousand hectares
2012: 450 thousand hectares
Therefore, the calculation is:
140+240+380+450=1210
Thus, the total area of forest lost is 1210 thousand hectares.
Step 2
The local people decided to farm cattle
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The local people decided to shift from rice farming to cattle farming as a means to adapt to changing environmental and economic conditions.
Step 3
The increase in the area of forest lost has caused an increase in the gas
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carbon dioxide
Step 4
The increase of this gas has been caused because less of the gas is being absorbed by plants for the process of
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photosynthesis
Step 5
Tick two boxes.
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• Animals and birds migrate because there is less food
• More habitats are destroyed
Step 6
Give one other way of reducing the negative effects of human activity on our ecosystems.
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One other way is through breeding programmes for endangered species.
