Across
- 1. the destruction of large areas of the natural environment as a consequence of human activity
- 5. a tropism in which light is the orienting stimulus
- 8. thorough destruction involving extensive loss of life especially through fire
- 11. a branch of biology concerned with the search for life outside the earth and with the effects of extraterrestrial environments on living organisms
- 12. represented on a coat of arms in a lying position with the head on the forepaws
Down
- 2. capable of destroying or eating away by chemical action
- 3. a lover of books especially for qualities of format
- 4. a person who seeks wisdom or enlightenment
- 6. a saprophytic organism
- 7. pronounced and usually negative phototaxis or phototropism
- 9. a new convert
- 10. a room for sleeping