The Earth's Resources
Natural resources - anything that comes from the earth, sea or air without human input.
Renewable resources - forms at the same rate as it is consumed.
Finite (non-renewable) resources - forms at a slower rate than it is consumed.
Sustainable living - living in a way that makes things last for the future.
Recycling - converting waste materials into new materials.
Life cycle assessments - looks at every stage of a product's life to access the impact it would have on the environment.
Portable water - water that's been treated and is safe for humans to drink.
Filtration - wire mesh stops large twigs, gravel and other solid particles from water.
Sterilistaion - harmful bacteria or microbes are killed.
Distillation - seperation of substances in a liquid by boiling and condensation.
Sewage - liquid and solid waste carried off in sewers and drains.
Sewage treatment - process of removing the contaminants from sewage.
Watch the video and have a go at writing out the steps of the practical.