Homework Activities

1. Each year 60 million British throw out:
   
   3million tonnes glass
   1 million tonne plastic
   0.5 tonne steel
   0.1 tonne aluminium
   
   Calculate on average how much, in kilograms of each material each Briton throws away.
   
   
2. 1 Kg of steel costs 3 €, 1 kg of aluminium costs 15 €. Given a steel coke can has a mass of 25g and an aluminium can has a mass of 15g. Compare the cost of the metal in each can.
   
   
3. Using internet stating your sources make a list of all the advantages and disadvantages of recycling.