Multiple Choice, 4 pts each:

1. The scientific method includes the following EXCEPT:
   1. A. making predictions (incorrect!)
   2. B. forming hypotheses (incorrect!)
   3. C. drawing conclusions (incorrect!)
   4. D. proving observations (OKEY!)
   5. E. making observations (incorrect!)
      Hint
2. Oxygen gas (O₂) can absorb almost all ________ rays in the stratosphere to form Ozone (O₃).
   1. A. UV-A (incorrect!)
   2. B. UV-B (incorrect!)
   3. C. UV-C (DOKEY!)
   4. D. UV-D (incorrect!)
   5. E. UV-E (incorrect!)
      Hint
      Chap 2 Self Quiz
3. BPA acts as a(n)
   1. A. endocrine disruptor (YEAH RIGHT!)
   2. B. hormone regulator (incorrect!)
   3. C. heavy metal poison (incorrect!)
   4. D. virus (incorrect!)
   5. E. insecticide (incorrect!)
      Hint
4. A(n) ________ study involves interviewing subjects to find correlations between disease and chemicals.
   1. A. epidemiological (WHATEVER!)
   2. B. experimental (incorrect!)
   3. C. clinical (incorrect!)
   4. D. in-vitro (incorrect!)
   5. E. in-vivo (incorrect!)
      Hint

Fill In (one to three words), 4 pts each:

5. Fat-soluble chemicals such as DDT can build up in the tissue of an animal over time in a process called                             .
   Hint