Chemistry WCH12/01 May June 2019 | Edexcel International AS Level Past Papers With Mark Scheme

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1. Atmospheric gases percentage changes, sources of CO₂, nitrogen cycle stages
2. Greenhouse effect consequences, enhanced greenhouse causes, carbon neutrality definition
3. Pathogen transmission modes, immune response steps, T lymphocytes and antibodies roles
4. Drug action types, vaccine benefits/risks, immune system disorders, vaccination misconceptions
5. Antibiotic resistance mechanisms, clinical trials phases, passive vs active immunity
6. Biodiversity importance, conservation methods, endemic species risks, seed banks role

Edexcel International AS/A Level Chemistry (WCH) Jun 2019

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Classification: Unit 2

Page count: 28

Viewed: 5

Last update: 19 days ago

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Chemistry WCH12/01 May June 2019 | Edexcel International AS Level Past Papers With Mark Scheme

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