| A | B |
|---|
| reasonable | fair, sensible, costing a fair price |
| migration | moving from one country or region to another |
| explore | to travel in order to discover what a place is like |
| theory | an idea or opinion based on some facts or evidence but not proved |
| astronomy | the study of stars, planets, and space |
| sphere | a solid shape like a basketball or globe, with all points of the shape the same distance from the center of the shape |
| prosperous | successful, thriving |
| yield | to produce something, to surrender or to give in |
| fact | a piece of information that is true |
| evidence | information and facts that help prove something or make you believe that something is true |
| support | to hold something up in order to keep it from falling; to earn a living for; to provide for; to help and encourage someone |
| conversion | a change of a person's religion or beliefs |
| occupation | a job |
