| A | B |
| 1. proof (n) | facts, information, documents etc that prove something is true |
| 2. refugee (n) | someone who has been forced to leave their country, especially during a war, or for political or religious reasons |
| 3. predict (v) | to say that something will happen |
| 4. dramatically (adv) | Output has increased dramatically. |
| 5. prosper (v) | if people or businesses prosper, they grow and develop in a successful way, |
| 6. retreat (v) | to move away from the enemy after being defeated in battle |
| 7. occur (v) | to happen |
| 8. actually (adv) | used to add new information to what you have just said, to give your opinion, or to start a new conversation: |
| 9. harvest (n) | the time when crops are gathered from the fields, or the act of gathering them |
| 10. plunge (v) | to move, fall, or be thrown suddenly forwards or downwards |
| 11. crop (n) | 1TAC a plant such as wheat, rice, or fruit that is grown by farmers and used as food |
| 12. famine (n) | a situation in which a large number of people have little or no food for a long time and many people die: |
| 13. struggle (v) | to try extremely hard to achieve something, even though it is very difficult |
| 14. recovery (n) | the process of getting better after an illness, injury etc |
| 15. agreement (n) | an arrangement or promise to do something, made by two or more people, companies, organizations etc: |
| 16. glacier (n) | a large mass of ice which moves slowly down a mountain valley |
| 17. cause (v) | to make something happen, especially something bad |
| 18. therefore (adv) | as a result of something that has just been mentioned |
| 19. during (prep.) | 1 from the beginning to the end of a period of time |
| 20. look back (v) | look after the situation again for any mistakes |