The heart
6 best study notes in The heart


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Biology - Circulatory System
Learn about the alternation of contractions and relaxation of the heart, as well as the factors affecting heart rate and risk factors for coronary heart disease.


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Biology - The circulatory system -B1
The circulatory system for biology paper 1 (foundation) AQA


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Biology - Notes on the Heart
biology notes for the heart, gcse science


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Biology - The heart + circulatory system IGCSE BIOLOGY
Useful visuals on how blood travels through the heart, use them as posters or just notes. This helped me get 9s


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Biology - Circulatory system: the heart
the circulatory system part 1: the heart


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Biology - The Heart
GCSE AQA Specific. The Heart - AQA Biology. Please do not repost this without my permission! Much love <3