Inventions

2. a pair of headphones, especially one with a microphone attached to it
5. allowing you to see through it
6. the act of putting somebody/something into a liquid, especially so that they or it are completely covered
7. to give something, especially money or goods, to help achieve or provide something
11. the quality or fact of being very fat, in a way that is not healthy
12. to say that something will happen in the future
14. the study of working conditions, especially the design of equipment and furniture, in order to help people work more efficiently
16. something important, interesting or typical of a place or thing

1. the rate at which something happens or is repeated
3. new and still developing
4. to make it possible for somebody/something to do something
8. a small computer that is easy to carry, with a large touch screen and usually without a physical keyboard
9. a collection of cells that form the different parts of humans, animals and plants
10. the process of growing plants in water or sand, rather than in soil
13. extremely large
15. relating to position, size, shape, etc. of things in it