A series of free Science Lessons for 7th Grade and 8th Grade, KS3 and Checkpoint Science in preparation for GCSE and IGCSE Science.
Drugs, Smoking and Alcohol
• Chemicals that affect the central nervous, changing behaviour and possibly addiction.
• Tobacco smoke contains many chemicals affecting health
Try the free Mathway calculator and
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problem and check your answer with the step-by-step explanations.
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