Across
- 6. thorough examination of a subject.(11)
- 9. by the sea. (7)
- 11. Deepest point on earth. (14)
- 12. accumulations of valuable minerals that
Down
- 1. a term in economics relating to the exploitation preservation and regeneration of the marine environment. (11)
- 2. depths of the ocean.(11)
- 3. increase in economic activity or value. (6)
- 4. a self-propelled vehicle to reach the
- 5. their way to the ocean.(15)
- 7. contains only minimal quantities of dissolved salts. (10)
- 8. a kind or sort in the world of biology. (7)
- 10. retain for future use. (7)