1What is a natural resource? Give examples from both of its main groups.
2On what basis are natural resources classified into renewable and non-renewable?
3Firewood is renewable and coal is not, yet both come from plants. Explain.
4Explain why the sentence renewable means unlimited is wrong.
5Why is soil an awkward case in this classification?
6Why are coal and petroleum called fossil fuels?
7Sand lay on riverbanks for millions of years. When did it become a natural resource?
8Why does a mistake with a non-renewable resource matter more than a mistake with a renewable one?
9Give three ways in which natural resources are used in industry and farming.
10A village doubles the number of trees it cuts each year but the forest still looks healthy. Why should it still be worried?