Edexcel OLevel Biology revision notes

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Lesson

Lesson-2.8.1- understand the origin of carbon dioxide and oxygen as waste products of metabolism and their loss from the stomata of a leaf.

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Lesson-2.7.19- understand the general structure of the circulation system, including the blood vessels to and from the heart and lungs, liver and kidneys.Previous Lesson-2.8.2- know the excretory products of the lungs, kidneys and skin (organs of excretion).Next