Read the passage about the fluoridation of drinking water According to the article, what valid claim came from the National Research Council? Since the early 1960s, fluoride has been added to many sources of drinking water to prevent cavities in OThere is no link between fluoride exposure and increased cancer risk in humans. teeth. This is called fluoridation. There are some who OThere is a possible link between fluoride exposure say that this is unnecessary and increases the risk of and increased cancer risk in humans. cancer O There is a definite link between fluoride exposure and increased cancer risk in humans and animals. in 1993, the Subcommittee on Health Effects of Ingested Fluoride of the National Research Council, part of the National Academy of Sciences, conducted an extensive study about the link between fluoridated O There is a possible link between fluoride exposure and increased cancer risk in animals drinking water and increased cancer risk. The study included data from more than 50 human disease studies and six animal studies. The Subcommittee concluded that none of the data showed a link between fluoridated drinking water and cancer. A 1999 report byy the CDC supported these findings. The CDC report

7. which was not an important advance made by the maya:

-deviced and accurate map of the world.

8. what was justinian code:

-a single, consistent set of laws for the byzantine empire.

9. which describes what theodora achieved as justinian´s most trusted adviser:

-getting laws passed to give married women more rights and to protect divorced women.

10. what caused the christian church to divide into two branches- the eastern orthodox church and the catholic church:                                             -differences in language, liturgy, and views on religious icons.

11. what was a result of the work done by the monks cyril and methodius:       - orthodox christianity spread to slavic cultures.

12. which is true about byzantine culture:

-it was a blend of greco-roman and persian culture.

13. which was not a major accomplishment of byzantine culture:

-the reconstruction of moscow

14. which group invaded the slavic homeland beginning in the ninth century:

-varangians

15. what did vladimir, prince of kiev, do in 988 to unify his people:       - he converted to orthodox christianity

16. what is the name of the book in which muhammad ´s words and teaching were collected:

-quran

17. what is the hajj:

-the pilgrimage to mecca that all muslims must undertake if possible

18. which accurately describes islamic belief:

-muhammad is god´s only prophet.

19. what happened to islam after the death of muhammad:

-it was practiced by only few people in small parts of the world

20. which region shows the extent of islamic territory 100 years after muhhamed´s death:

-egypt, mesopotamia, persia.(b)

21. which led to the division between sunni and shia following the death of muhammed:

-conflict over who should be the caliph

22. the muslims achieved many spectacular advances, which was not one of them:

-they created the justinian´s code.

a and b!

dfroos means which is a and b

i need the diagram.