life cycle assessment and recycling

• describe lifecycle assessment 


  assess environmental impact of product
• give stages of product assessed in lca

  extracting raw material, ,manufacturing and packaging, usage and disposal
• give limitations of lca

  difficult to provide numerical value, subjective and risk of bias
• give materials that can be recycled

  glass and metal
• describe process of recycling glass

  glass crushed and melted then reshaped
• describe process of recycling metals

  melting and recasting or reforming