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To alter the size of the pupil, so the correct intensity of light is allowed through. Enough light is let through to allow clear vision, but not so much light that the retina might become damaged.

Solid.

An enzyme is a globular protein that acts as a biological catalyst.  They work by reducing the activation energy of chemical reactions, which increases the rate of reactions.

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The media: Can pick up on small things such as Gordon Brown referring to Gillian Duffy as a bigot.

The Party: The Conservative Parties backbench demands for a European Uniion referndum wh...

The franchisee will be buying into a established brand so there will be less risk of the business failing because they have a good repuattion and have a product which consumers will demand.

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