Vocabulary

3. an overflow of a large amount of water beyond its normal limits, especially over what is normally dry land
4. a fish-eating aquatic mammal with a streamlined body
7. the action or process of arriving
10. tourism directed towards exotic, often threatened, natural environments, intended to support conservation efforts and observe wildlife
11. a prolonged period of abnormally low rainfall, leading to a shortage of water
13. a general view, examination, or description of someone or something
16. a notice or announcement in a public medium promoting a product, service, or event
17. to make full use of and derive benefit from (a resource)
20. feeling or showing an appreciation for something done or received
21. the work of carrying luggage or other loads, done by porters or labourers
22. the systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions

1. the presence in or introduction into the environment of a substance which has harmful or poisonous effects.
2. a verbal or written answer
5. not satisfactory or allowable
6. a place, amenity, or piece of equipment provided for a particular purpose
8. a room, group of rooms, or building in which someone may live or stay
9. a person employed to carry luggage
12. giving the wrong idea or impression
13. a commercial establishment offering health and beauty treatment through such means as steam baths, exercise equipment, and massage
14. noun that belongs to the verb 'consume'
15. a period of waiting
17. a person who explores a new or unfamiliar area
18. a word used to introduce a statement that contrasts with or seems to contradict something that has been said previously
19. an educational talk to an audience