Across
- 3. having existed for a long time
- 6. relating to the heart and blood vessels
- 7. noticeable, eye-catching
- 9. substance produced in an organism
- 10. urgent and severe
Down
- 1. great destruction or damage
- 2. pressure or tension
- 4. a system with a way of doing sth
- 5. make stronger
- 8. put or send out