Across
- 2. organism that lives on and breaks down other organisms or their waste for matter and energy
- 3. an organism that gets matter and energy by eating other organisms
- 6. to take in or soak up
- 8. loose material that covers the ground; made of rock particles, organic matter, air, and water
- 9. organism that lives on living or once-living organisms (examples include: mushrooms, molds, yeast)
- 11. a network of connected food chains showing feeding relationships within an ecosystem
- 12. a type of matter made of particles that are moving freely in space
- 15. a specific area where plants, animals, decomposers, and other organisms interact with each other and their environment
- 18. a tiny piece of matter that is too small to be seen with our eyes
Down
- 1. a living thing that is too small to be seen without a microscope (example: protist, bacteria)
- 4. a fallen tree that helps other things live and grow
- 5. the natural environment that helps organisms live, grow, and survive
- 7. a living organism that produces its own food, usually using matter from air and water and by transferring energy from the Sun
- 10. any organism (microscopic organism, fungus, or animal) that feeds on and breaks down matter from once-living organisms into particles that can be used by other organisms
- 13. to break down food into tiny pieces that can be used by an organism's body
- 14. a sequence of organisms that eat each other, showing how matter and energy move in a natural system
- 16. the ability to cause a change (Evidence of energy transfer includes motion, sound, light, heat, or electrical current.)
- 17. any substance that takes up space and can be measured by its weight or mass