Chapter 1

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Across
  1. 3. the variable that is observed during the experiment
  2. 6. well-tested explanation for a broad set of observations
  3. 7. the study of processes that take place in organisms
  4. 9. the variable that you can change during an experiment
  5. 10. study of the composition of matter and the changes that matter undergoes
  6. 11. a proposed explanation for an observation
Down
  1. 1. a material found in air, water, or soil that is harmful to humans or other organisms
  2. 2. means by which a society provides its members with those things needed and desired
  3. 4. a procedure that is used to test a hypothesis
  4. 5. the world of objects that are large enough to see with the unaided eye
  5. 7. applies science to the production of biological products or processes
  6. 8. world of objects that can be seen only under magnification
  7. 9. anything that has mass and occupies space