Across
- 5. - A substance that can not be broken down into simpler substances
- 6. - where light dependent reactions occur
- 7. - a unit of energy
- 8. - a chemical process that produces materials to make energy
- 11. - a solution that has a higher concentration
- 14. - the central part of an atom
- 15. - a substance that has a pH of more than 7
- 16. - the state in which things are equal
- 17. - a solution that has a lower concentration
- 18. - tissue that reacts to outside stimuli
- 19. - chemical fuel for living things (full name)
- 20. - A factor in an ecosystem that relays on density
- 21. - realistic expansion of a population
- 23. - the amount of organisms in a species an ecosystem can support
- 25. - diffusion that requires outside help to occur
Down
- 1. - The number of organisms per unit area
- 2. - a cell that performs a specific function
- 3. - the process by which the body maintains equilibrium
- 4. - tissue that connects
- 9. - a substance that speeds up a chemical reaction
- 10. - tissue that allows for movement
- 12. - unrealistic expansion of a population
- 13. - the process by which a cell uses chemical energy
- 22. - A group of tissues that work together to perform a specific function
- 24. - a substance that has a pH of less than 7