Fill in the gaps

1. [ ]
   is a person who is concerned about the damaging effects of human activity.
2. [ ] species of animals are Amur tigers, humpback whales, rare species of birds.
3. Some
   [ ] hotels provide many facilities for tourists, for example, laundry service, ironing or shoe repairs.
4. Mankind is facing the
   [ ] catastrophe nowadays.
5. The effects of human
   [ ] activity are inevitable.
6. Our planet is full of
   [ ] resources such as oil, gas, coal.
7. The
   [ ] of creatures makes us think about their future.