IGCSE Biology / Human influences on the environment

How acid rain forms and what it does

Edexcel International GCSE Biology (4BI1), chapter 15: Human influences on the environment, specification point 4.12. Part of the full course.

Read the revision notes · IGCSE Biology past papers

Acid rain forms when gases from burning fossil fuels react with water and oxygen in clouds. It can damage trees, lakes, soil and buildings, often far from where the gases were released.

More lessons in Human influences on the environment

• Glasshouses and polythene tunnels, and why they raise yield
• How fertilisers increase crop yield
• Pesticides and biological control
• Feeding people without emptying the sea
• Greenhouse gases and global warming
• Sewage, carbon monoxide and sulfur dioxide
• The effects of cutting down forests
• Fertiliser, algae and dead water
• Sustainable resources and conservation