Across
- 3. Energy flow through an ecosystem
- 4. Direct economic benefit
- 6. Contain only carbon and hydrogen
- 10. All the populations in the same area
- 12. Structure made of one or more tissue
- 14. Basic unit
- 15. Anything that has mass and takes up space
- 16. Abiotic and biotic factors in an area
- 17. Number of individuals per unit of area
- 19. Contain carbon
- 21. Individual with more than one organ system
- 24. Same element with different mass
- 26. Recreational, inspirational, or spiritual
- 27. Similar ecosystem with similar environments
- 28. Our obligation to allow life to continue in an area
- 29. Group of same kinds of cells
Down
- 1. Number of same species in a specific area
- 2. Nonliving things
- 5. Charge= 0
- 7. Group of organs that work together
- 8. Living things
- 9. The ability to be maintained at a certain rate or level
- 11. Charge= -1
- 13. Two or more elements chemically bonded to make a new substance
- 17. Total number of individuals
- 18. I=PxAxT
- 20. Charge= +1
- 22. Protect the species in the area
- 23. Part of the earth where life exists
- 25. Same type of matter