Across
- 1. An animal that hunts and eats other animals
- 2. The green pigment that absorbs light for photosynthesis
- 3. The struggle between organisms for resources such as food or space
- 8. The variety of different living organisms in an area
- 13. The process plants use to make food using light energy
- 17. An enzyme that breaks down starch into sugars
- 18. An enzyme that breaks down proteins into amino acids
- 20. The tube that carries food from the mouth to the stomach
- 23. All the populations of different species living in an area
- 24. The organ that absorbs water from undigested food
- 25. An organ that churns food and mixes it with acid
- 27. A diagram showing how energy passes between organisms
- 28. A nutrient used for energy storage and insulation
- 29. A protein that speeds up chemical reactions
- 30. The chemical reaction that releases energy from glucose
Down
- 1. A nutrient used for growth and repair of tissues
- 4. All the organisms of one species living in an area
- 5. An organism that gets energy by eating other organisms
- 6. The sugar produced during photosynthesis
- 7. The group of organs that breaks down food into smaller molecules
- 9. A nutrient that provides the body with energy
- 10. Where food enters the body and digestion begins
- 11. A nutrient needed in small amounts to keep the body healthy
- 12. A community of living organisms and their environment
- 14. The place where an organism lives
- 15. The organ where most digestion and absorption occur
- 16. A group of similar organisms that can reproduce with each other
- 19. An animal that is hunted and eaten by another animal
- 21. An organism that makes its own food, usually a plant
- 22. An enzyme that breaks down fats into fatty acids and glycerol
- 26. test A method used to find out which nutrients are present in food