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Plant defences and the human immune system

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Question 21

The table below shows the number of reported cases of rubella in a population between 1970 and 2010.

YearNumber of rubella cases reported
197054,200
198016,800
19902,400
2010120

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