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6 marksVectors, Microorganism Control and Immunity

CSEC Human and Social Biology · 2021 · Paper 2 · Question 6(c)

A 10-year-old boy does not bathe regularly or change dirty clothes.

Aside from awful body odour, explain THREE health challenges Brendon may experience as a result of these poor personal hygiene practices.

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Other parts of this question

  1. 6(a)(i)State ONE example of continuous variation and ONE example of discontinuous variation.[2 marks]
  2. 6(a)(ii)State TWO reasons why genetic variation is important to organisms.[2 marks]
  3. 6(b)(i)Name the disease that the Aedes aegypti mosquito carries and identify ONE other mosquito-borne disease.[2 marks]
  4. 6(b)(ii)Explain why scientists predict that long dry seasons could increase levels of mosquito-borne diseases.[3 marks]

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