When we eat food, some particles remain stuck in between or on the teeth. These particles, if not removed, form 'X' and the organisms found in 'X' are 'Y". Thousands of 'Y' convert the sugar into acid. This acid attacks the 'Z' which is the hardest substance and covers the outer portion of the teeth and leads to tooth decay.
(a) Identify X, Y, Z
(b) How can you prevent yourself from tooth decay?
(c) Write one importance of teeth in our body?
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Answer:
a)bacteria the answer of x
b) after eating brush your teeth
c)brush your teeth twice a day and bath
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