Ecosystems

5. connected food chains showing feeding relationships within an ecosystem
6. a fallen tree that helps other thigns grow
8. any organism that feeds on and breaks down once-living organisms into particles that can be used by other organisms
13. a living this that is to small to see without a microscope
15. the natural environment that helps organisms live, grow and survive
16. an organism that lives on and breaks down organisms or waste for their matter or energy
17. anything that takes up space and can be measured by its weight/mass

1. to break down food into tiny pieces that can be used by an organism
2. a living organism that produces its own food
3. the ability to cause a change
4. a tiny piece of matter that is too small to be seen with our eyes
7. a specific area where organisms interact with each other and their environment
9. a sequence of organisms tha eat each other, showing how energy moves in a natural system
10. loose material that covers the ground; made of rock particles, organic matter, air and water
11. a type of matter made of particles that are moving freely in space
12. an organism that gets matter and energy by eating other organisms
14. to take in or soak up