Chemistry C10

• They come from the earth, sea, and air
• They form without human input and can be replaced or improved
• They can be renewable or non-renewable

• An approach to development that takes account of the needs of present society while not damaging the lives of future generations

• Bioleaching - bacteria
• Phylomining - plants in soil that contain copper

• Mining and extracting metals takes lots of energy - fossil fuels
• recycling = less energy and melting and casting

• Glass bottles can often be reused without reshaping
• Recycled glass is organised into colours and chemical composition and is then crushed and melted

• Getting the Raw Materials
• Manufacture and Packaging 
• Using the Product
• Product Disposal

• Water that has been treated or is naturally safe for humans to drink

• The process of treatment depends on where you are
• Filtration - a wire mesh screens out large twigs and then gravel and sand beds filter out any other solid bits
• Sterilisation - the water is sterilised to kill any harmful bacteria or microbes

• Agricultural systems
• Sewage
• Industrial processes
• Organic matter

Waste Water

Screening

Sedimentation

aerobic digestion                                                                                        anaerobic digestion

released back into environment                                           natural gas                       fertiliser