Across
- 4. an animal that cannot regulate its internal body temperature
- 6. the smallest unit of life
- 8. organisms that produce their own food
- 11. a close relationship between two and more species where at least one benefits
- 13. a body covering typically made of chitin that provides support and protection
- 14. the tendency of a plant to grow up and away from the earth
- 15. a monosacchiaride that is produced in photosynthesis
- 16. a polysaccaride that animals typically use to store excess carbohydrates
- 18. an animal that can regulate its internal body temperature
- 19. a group of cells that prepare and release a chemical for use by the body
Down
- 1. a chemical messenger released into the blood stream that sends signals to distant cells causing them to change their behavior in specific ways
- 2. carbohydrates that are made up of to monosacchiarides
- 3. the inner layer of the skin
- 5. organisms that break down the dead remains of other organisms
- 7. produces energy, carbon dioxide, and water
- 9. the biologic kingdom that contains decomposers made of eukaryotic cells
- 10. the process by which an organism breaks down its food in small units that can be absorbed by the body
- 12. a chemical substance the body needs in small amounts to stay healthy
- 13. the outer layer of skin
- 17. organisms that eat living producers or other consumers for food