Across
- 3. The collection of plants and animals in an environment
- 6. The act of a species completely disappearing
- 7. A sign
- 8. Animals that are warm blooded, hairy or furry and feed their offspring on milk
- 9. The family of animals including stoats, weasels, ferrets, badgers, mink and tree martins
- 10. Anything to do with the heart
Down
- 1. To completely remove
- 2. The breathing or gas exchange systems of animals and plants including how energy is extracted from food
- 4. A flavouring based on an asian spice
- 5. Getting fewer or less