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The blood is an amazing way to deliver all kinds of important and interesting materials around our body to the organs and tissues that need it the most and is efficient in removing harmful substances from...
(Any diagram showing an iris that has constricted) 1 markIn high light levels (1 mark) Accept reflex action due to increased photoreceptor action or words to that effectcircular muscles relax ...
Controlling high blood glucoseBlood glucose levels are important to control because glucose is our key source of energy in respiration. When blood glucose levels are too high, this...
Synapses are a gap or a junction between two neurones. When a nerve impulse is travelling along the axon of the first neurone and the impulse reaches the axon terminal (the end of the axon), a chemical ca...
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