Edexcel OLevel Biology revision notes

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Lesson

Lesson-2.9.14- describe the role of the skin in temperature regulation, with reference to sweating, vasoconstriction and vasodilation.

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Lesson-2.9.13- understand the function of the eye in focusing on near and distant objects, and in responding to changes in light intensity.Previous Lesson-2.9.15- understand the sources, roles and effects of the following hormones: adrenaline, insulin, testosterone, progesterone and oestrogen.Next