| A | B |
| proof | a fact or piece of information which shows that something exists or is true |
| refugee | a person who has escaped from their own country for political, religious or economic reasons or because of a war |
| predict | to say that an event or action will happen in the future, especially as a result of knowledge or experience |
| dramatically | suddenly or obviously |
| prosper | (of a person or a business) to be or become successful, especially financially |
| retreat | to go away from a place or person in order to escape from fighting or danger |
| occur | (especially of accidents and other unexpected events) to happen |
| actually | in fact or really |
| harvest | the time of year when crops are cut and collected from the fields, or the activity of cutting and collecting them, or the crops which are cut and collected |
| plunge | to (cause someone or something to) move or fall suddenly and often a long way forward, down or into something |
| crop | the total amount collected of) a plant such as a grain, fruit or vegetable grown in large amounts |
| famine | when there is not enough food for a great number of people, causing illness and death, or a particular period when this happens |
| struggle | to experience difficulty and make a very great effort in order to do something |
| recovery | the process of getting back something lost, especially health, ability, possessions, etc |
| agreement | when people have the same opinion, or when they approve of or accept something |
| glacier | a large mass of ice which moves slowly |
| cause | to make something happen, especially something bad |
| therefore | for that reason |
| during | from the beginning to the end of a particular period; |
| look back | to think about something that happened in the past |