Across
- 2. an armoured mammel
- 5. a lung discease
- 8. a natural disaster named Melissa
- 9. for certain the right answer
Down
- 1. a large citrus fruit with a tough rind
- 3. the simplest alkane
- 4. considered the father of geometry
- 6. the second noble gas on the periodic table
- 7. a plant with showy purple flowers