Occupational hazards in underground mining present significant risks to respiratory health.
Describe how chronic inhalation of respirable coal dust damages the lungs and reduces the efficiency of gas exchange.
Carbon monoxide (CO) is a highly toxic gas produced by incomplete combustion of diesel fuel in underground mining equipment. Explain how inhaling carbon monoxide reduces a miner's physical stamina and ability to perform heavy manual labour.
16 exam-style questions on Edexcel IGCSE Biology Gas exchange. Each one has a worked solution and a mark scheme showing where the marks go.