IGCSE Biology / Human influences on the environment

Sustainable resources and conservation

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

Read the revision notes · IGCSE Biology past papers

A sustainable resource is replaced at least as fast as it is used, while conservation protects and carefully manages species and habitats. Both matter because they help resources remain available and preserve the practical benefits that species and ecosystems provide.

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
• How acid rain forms and what it does
• Sewage, carbon monoxide and sulfur dioxide
• The effects of cutting down forests
• Fertiliser, algae and dead water