In this A Level, IB Biology video, Hazel talks through the different modes of nutrition this includes saprotrophic, autotrophic and heterotrophic nutrition.

These videos are designed to help with your A level and SL IB science revision.

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Hazel completed her undergraduate degree at St John's College, the University of Cambridge. She then did a PGCE (Post-Graduate Certificate of Education) before qualifying as a science teacher. She now works full time as a professional tutor.

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