Across
- 3. A single, self-contained, living thing
- 6. All living and nonliving things and all their interactions in an area
- 7. The space, conditions, and all the living and nonliving things around an organism
- 8. The heaviness of an object; force of gravity on mass = weight
- 10. A very small life-form, especially bacterium
- 13. Anything that has mass and takes up space
- 16. An organism that uses sunlight to make its own food for energy
- 17. A group of organisms that are similar to one another and can combine to produce more of their kind
- 18. An increase in size, abundance, or complexity
- 19. An organism that gets energy from eating plants or animals
- 20. The process where plants use sunlight, water, and carbon dioxide to produce sugar and release oxygen
- 21. A type of living thing that gets its energy from the Sun and is unable to move from place to place on its own
Down
- 1. A type of organism that can break down just about any type of organic matter and can be large, such as a mushroom, or small, such as tiny pieces of mold
- 2. Any unused and rejected materials that are seen as worthless or unwanted
- 4. The matter from which a thing is or can be made
- 5. An interconnected set of food chains
- 9. Actions by one thing that have an effect on a different or separate thing
- 11. When the well-being of two or more things is linked together
- 12. Requirements for the well-being of an organism
- 14. A type of organism that can break down just about any type of organic matter and is too small to see without tools
- 15. An organism that breaks down the remains of dead plants or animals without need for internal digestion
- 17. A mixture of sand, silt, clay, rock, and humus (plant and animal remains)