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Plant defences and the human immune system

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Question 4

Table 1 shows the number of rubella cases reported in a country from 1970 to 2010.

Table 1: Number of reported rubella cases

YearNumber of rubella cases reported
197050 200
198018 400
19904 200
2000850
201095

Explain one conclusion that can be made about the change in the number of rubella cases reported from 1970 to 2010.

[2]

Plant defences and the human immune system Questions

  1. GCSE
  2. /Biology
  3. /Plant defences and the human immune system