Crossword

4. to judge or decide something after thinking carefully about it
5. to increase something
7. a main message or piece of information that you learn from something you hear or read
10. someone who studies a subject, especially in order to discover new information or reach a new understanding
11. a hormone which our body make when we are stressed
13. to discover or get proof of something
14. to have an influence on something
15. continuing for a long time, especially of a disease or something bad
16. an examination of opinions, behaviour, etc., made by asking people questions

1. a group of people or things that is chosen out of a larger number and is asked questions or tested in order to get information about the larger group
2. in a way that happens or is done too soon, especially before the natural or suitable time
3. to guess or calculate the cost, size, value, etc. of something
6. giving protection
8. a difficult or unlucky situation or event
9. _____ substances are intended to prevent or limit the process of becoming old
11. to organize and perform a particular activity
12. causing or likely to cause damage