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OCR AS Level Biology A Paper 1 June 2021. H020/01: Breadth in biology WITH MARK SCHEME (MERGED)
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OCR AS Level Biology A Paper 1 June 2021. H020/01: Breadth in biology WITH MARK SCHEME (MERGED) Young mammals receive antibodies in their mother’s milk. This is an example of which type of immunity? A artificial active immunity B artificial passive immunity C natural active immunity D n...
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