Biology

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