biology

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Across
  1. 3. A controlled investigation
  2. 6. must be testable
  3. 9. possible answer that can be tested
  4. 11. have a double bond between carbons, bent or curved shape, liquid at room temp, found in plants
  5. 15. relationship between organisms for the same resource
  6. 17. contains maximum number of hydrogens, straight chains, solid at room temp., found in animals
  7. 18. statement that cannot change under certain natural conditions
  8. 20. a scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.
Down
  1. 1. way of gaining knowledge of the natural world
  2. 2. detailed examination of the elements or structure of something.
  3. 4. long chains of amino acids
  4. 5. ex:triglycerides, phospholipids and steroids
  5. 7. broad explanations that are well supported by data can change over time
  6. 8. representation of part of the real world and used to show relationships
  7. 10. sugar or starch used to store energy
  8. 12. close relationship between species where at least one of benefits
  9. 13. Group of same kind of cells
  10. 14. what is an individual living thing
  11. 16. five sentences
  12. 19. a basic unit