Across
- 4. a type of system where energy and matter cannot be exchanged.
- 6. a type of system where both matter and energy can be exchanged.
- 7. the smallest soil particle size.
- 8. the medium soil particle size.
Down
- 1. a type of system where matter cannot be exchanged but energy can.
- 2. living components of ecosystems.
- 3. nonliving components of ecosystems.
- 5. the largest soil particle size.