1. Ask the students to decide what their first reactions are to the reintroduction of the following species:
2. Ask them how their views about each would change if they knew, through scientific investigation, that the reintroduction would:
3. How do they think these things could be determined?
4. Ask the students to find out which species are in danger of disappearing from the UK within the next 50 years. Would they rather see the reintroduction of a recently extinct species, or of one that has been gone from this country for centuries? Ask them to explain their reasoning.