Homeostasis Vocab/Ideas

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Across
  1. 2. Organism that eats other organisms to get energy
  2. 5. Hard outer part of marine organisms that keep organs inside; Requires calcium carbonate
  3. 6. Arrows in a food chain/web show the direction of this
  4. 8. Living factor of an environment
  5. 9. Substance with a pH greater than 7
  6. 10. Organism that generates its own energy through photosynthesis
  7. 11. Materials that are moved against concentration gradients that require energy
  8. 13. Compound that mixes with water to produce carbonic acid
Down
  1. 1. Concept that organisms maintain balance within their environment
  2. 3. Part of the cell that controls movement of materials in and out
  3. 4. Non-living factor of an environment
  4. 7. Movement of substances across a membrane from high to low concentration
  5. 12. Substance that has a pH lower than 7