Cerebral cortex  - Part of the brain involved with consciousness, Sclera - The white, outer layer of the eye, Cerebellum - Part of the brain involved in co-ordination, Cornea - Transparent layer on the front of the eye, Myopia - Short-sightedness, Urea - Poisonous in high amounts - removed via the kidneys, Ammonia - Processed by the liver, where it is changed into urea, Hyperopia - Long-sightedness, Hypothalamus - Regulation centre in the brain for water and temperature control,

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