Glaucoma is an eye condition where high pressure inside the eye causes damage to the optic nerve.
Explain how damage to the optic nerve affects the ability to see.
The total population of a country is 58.4 million58.4\text{ million}58.4 million, of which 42.5%42.5\%42.5% are over 606060 years of age. Within this older age group, 8.5%8.5\%8.5% of the people develop glaucoma. Calculate the number of people in this country over the age of 606060 who develop glaucoma.
26 exam-style questions on Edexcel IGCSE Biology Co-ordination and response. Each one has a worked solution and a mark scheme showing where the marks go.