World Without Fish

1234567891011121314151617181920
Across
  1. 1. The weather conditions prevailing in an area in general or over a long period
  2. 3. the remains or impression in rock of a prehistoric plant or animal from an earlier geological period
  3. 5. The term for an animal that migrates
  4. 6. The process in which all members of a particular species dies out
  5. 9. Synthetic thread or yarn composed of a single strand rather than twisted fibres
  6. 12. The process by which organisms have developed from earlier forms throughout the history of the earth
  7. 13. The study of animals and organisms that live in sea water, and their relationship with each other and their environment
  8. 15. The process in which plants convert carbon dioxide into oxygen
  9. 17. Making or intending to make a profit
  10. 19. The variety of plant and animal life in the world or in a particular habitat
  11. 20. The measure of all the salts dissolved in water
Down
  1. 2. A biological community of interacting organisms and their physical environment
  2. 4. Able to be maintained at a certain rate or level
  3. 7. A limited quantity of a particular product which under official controls can be produced, exported, or imported
  4. 8. An organism that can use a mix of different sources of energy and carbon
  5. 10. A main classification of all living organisms
  6. 11. Scientific name for the human species
  7. 14. A chemical compound (known as CO2) that is composed of a carbon atom double bonded to two oxygen atoms
  8. 16. Scientific term for an animal with a spine and vertebrae
  9. 18. The fish and other marine creatures caught unintentionally in commercial fishing nets during fishing for a different species