1.  par-, para-  path  per-  peri-  photo

2. 1. Because of phototropism, I turn my ivy plant every two weeks to give it a balanced growth. Plectranthus australisPlectranthus australis Swedish Ivy,pic 2Swedish Ivy,pic 2 LamiaceaeLamiaceae Plectranthus australisSwedish Ivy, pic 2LamiaceaeSwedish Ivypic 2

3. 2. The term photon was proposed by Gilbert Lewis in 1926, although the concept of light as a unit of electromagnetic energy had already been discovered by Hans Christian Orsted in 1820.

4. 3. The sofa cushions are lighter on the top than the bottom because of photolysis allowed by the skylight in the living room.

5. 4. The photographer used a photometer to make sure the wedding pictures will be perfect.

6. 5. An example of photokinesis is how, in the human eye, the pupil opens and closes in response to the amount of light.

7. 6. I wish I were like Julia Roberts! She is so photogenic, but I always look like a doofus in the photographs.

8. 7. Those deep-sea fish are interesting on account of their photogenic scales.

9. 8. Second graders learn about photosynthesis, which is part of the carbon cycle, in their science classes.

10. 9. Photo finish- a finish of a race in which two or more contestants are so close to the finish line that reference to a photograph of the finish is necessary to determine the winner

11. 10. photography- the process or art of producing images of objects on sensitized surfaces by the chemical action of light or of other forms of radiant energy, as x-rays, gamma rays, or cosmic rays.

12. 11. Photojournalism- news photography, whether or not for primarily pictorial media, publications, or stories

14.  What does he mean?  Why do you agree or disagree?  What are some examples?

15. 1. The message was intended for whom? (for him) 2. Who held the winning ticket? (He did) 3. Who received the grand prize. (He did) 4. To whom was the package addressed? (The package was addressed to him.)

16. 5. Who 6. Who 7. Who 8. Whom 9. Who 10. Whom 11. Who 12. Whom

17. 1. Give us a chance. (drop out other players) 2. We were chosen. 3. Mrs. Morgan gave us a cooking lesson. ( boys) 4. After a while, we learned the material. (students ) 5. We built a bonfire. ( campers) 6. Did you see us in the race ? ( skaters) 7. Did you recognize us in our costumes ? ( girls ) 8. We saw an exploding star. ( scientists )

18. 9. The dogs followed us home. ( boys) 10. Insiders gave us information. ( spies ) 11. Quickly, we set up the tables. ( students) 12. You knew us immediately. ( fellows) 13. The police showed us the proof. ( reporters ) 14. Mother gave us a grateful look. ( all ) 15. We grabbed the balls and ran. ( players ) 16. In a flash we saw the danger. ( divers ) 17. Hand us our towels, please ? ( swimmers )

19. 18. We were chosen to be cafeteria helpers. ( two ) 19. They helped us. ( left-hands ) 20. We like football, too. ( girls )