Answer the questions on the basis of your understanding of the following passage, rable and relas...

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Counter-Strike: Source
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Counter-Strike: Source (2004)
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Answer the questions on the basis of your understanding of the following passage, rable and relased studied conceprs:
Nick and Jody were classmates. They both are keen of performing experiment to prove known facts. Their science reacher told them about the tooth decay by the acidic substances. They both tried to prove it separately.
Nick knew chat human reech and eggshells are made of similar substances so he set up an investigation using eggshells.
Nick found that the mass of the eggshells in beakersand X decreased but the mass of the eggshells in beakers Y and Z decreased but the mass of the eggshells in beakers Y and Z soft drink on human teeth. She used identical shells to model teech. She pue one shell in each type of soft drink for two weeks. To find out how much of the shell has dissolved, Jody measured the mass of the shell before and after the investigation and calculated the change in che mass of the shells.
The table shows the changes in the mass of the shells.

4c Change in mass of shells (g)

Type of soft drink Trial 1 Trial 2 Trial 3 Trial 4

Cola 2.01 2.03 2.34 2.01

Orange 2.10 2.51 2.16 2.15

Lernonade 1.04 1.06 1.05 1.03

Cream soda 1.07 1.08 1.07 1.07


Which of the following is supported by these observations?
(a) Soft drinks cause tooth decay
(b) The sugar in soft drinks causes tooth decay
(c) Children should not be allowed to drink soft drinks
(d) The substance that makes the soft drink fizzy may contribute to tooth decay

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