Ajay likes to eat a lot chocolate. His sister Anita asks him to brush his teeth before going to sleep in the night every day. Ajay says brushing the teeth in the morning is enough. (i) Who is correct? Why? Justify. (ii) What is the value displayed

Ankita is correct.

Explanation:

Food, especially that is rich in carbohydrates and sugars, causes the growth of bacteria in the mouth. These bacteria attack the tooth enamel of a person. During the time of having food all day, we tend to accumulate lots of bacteria in our mouth. If we do not brush our teeth at night, then these bacteria will attack our tooth enamel and might even cause plaque. Hence, it is necessary to brush teeth in the morning as well as night.