Across
- 4. a instrument with magnetic needle that points south
- 6. in biology and ecology
- 8. surroundings especially as they affect people and other living things
- 10. the science or study of living things
Down
- 1. of life or living things
- 2. a number, amount or situation that is likely to change
- 3. likely to die out or disappear nearly extinct
- 5. wearing something away
- 7. one of the main masses of land in the world
- 9. the plants of a particular area or period