Tick the correct answer.
(i) Which one of the following does not make a substance a resource?
(a) Utility
(b) Value
(c) Quantity
(ii) Which one of the following is a human-made resource?
(a) Medicines to treat cancer
(b) Spring water
(c) Tropical forests
(iii) Biotic resources are
(a) Derived from living things
(b) Made by human beings
(c) Derived from non-living things