Across
- 4. a species that occurs naturally in an area
- 6. the long bone in the upper arm of humans
- 7. the tendency to behave in a particular way
- 9. hate water
Down
- 1. chemical that kills insects
- 2. the concentration of water vapour in the atmosphere
- 3. the possession of antibodies against a particular disease
- 4. describing a structure that is positioned below or lower than another structure in the body
- 5. a sharp flattened tooth in mammals used for biting
- 8. a hormone secreted by the pancreas that regulates blood sugar level