B2.1 Unit 5

2. to send a spacecraft or bomb into the sky, or a ship into the water
5. a movement forward, a new discovery
9. relating to genes
11. a new idea or method that is being tried for the first time, or the use of such ideas or methods
12. a change in something
14. to develop or make something develop, usually gradually
15. relating to medical operations

1. an important discovery or event that helps to improve a situation or provide an answer to a problem
3. the act of studying or examining something in detail, in order to discover or understand more about it, or your opinion and judgment after doing this
4. the whole of the human race, including both men and women
6. relating to the use of wireless technology to make a payment using a credit card or debit card, or a mobile phone
7. causing, or made in a way that causes, little or no damage to the environment and therefore able to continue for a long time
8. a guess of what a size, value, amount, etc might be
10. to change something completely, usually to improve it
13. to change something, usually slightly