Across
- 2. to get bigger or increase in size over time
- 4. smallest living unit that makes up all organisms
- 8. animal that lives in water, breathes with gills, often has scales
- 10. living thing that eats plants or other animals to survive
- 14. substance eaten to give energy and help growth
- 15. organ that controls the body and helps you think
- 19. everything around a living thing that affects how it lives
- 20. ability to do work or carry out life processes
Down
- 1. small animal, often with six legs and sometimes wings
- 3. clear liquid that all living things need to survive
- 5. plant part that makes food using sunlight and air
- 6. animal with feathers, wings, and usually can fly
- 7. living thing that makes its own food using sunlight
- 9. place where a living thing lives and finds food and shelter
- 11. body tissue that helps you move and do work
- 12. organ that lets oxygen in and removes carbon dioxide
- 13. plant part that takes in water and minerals from soil
- 16. mixture of gases including oxygen that animals need to breathe
- 17. hard part inside the body that supports and protects organs
- 18. organ that pumps blood around the body to carry oxygen