Edexcel OLevel Biology revision notes

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Lesson

Lesson-2.9.3- understand that a co-ordinated response requires a stimulus, a receptor and an effector.

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Lesson-2.9.2- understand that homeostasis is the maintenance of a constant internal environment, and that body water content and body temperature are both examples of homeostasis.Previous Lesson-2.9.4- understand that plants respond to stimuli.Next