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The pie chart shows how many people died worldwide in 2015 from 10 common diseases - Edexcel - GCSE Biology - Question 5 - 2018 - Paper 1
Question 5
The pie chart shows how many people died worldwide in 2015 from 10 common diseases. (i) The total number of deaths from these diseases was 16820000. Calculate the p... show full transcript
Worked Solution & Example Answer:The pie chart shows how many people died worldwide in 2015 from 10 common diseases - Edexcel - GCSE Biology - Question 5 - 2018 - Paper 1
Step 1
Calculate the percentage of deaths caused by malaria.
Answer
To find the percentage of deaths caused by malaria, we can use the formula:
ext{Percentage} = rac{ ext{Deaths from malaria}}{ ext{Total deaths}} imes 100Substituting the values:
ext{Percentage} = rac{2.1 ext{ million}}{16,820,000} imes 100 = rac{2,100,000}{16,820,000} imes 100 \\ ext{Percentage} \\ = 12.5\%Step 2
Describe how malaria is spread.
Answer
Malaria is spread primarily through the bite of infected female Anopheles mosquitoes. These mosquitoes pierce the skin to extract blood and can transfer the malaria-causing protozoan from one person to another during this process. Additionally, it can be transmitted through blood transfusions or shared needles.