Question

2. How are cavities formed?​

Answer 1

Answer:

Cavities are permanently damaged areas in the hard surface of your teeth that develop into tiny openings or holes. Cavities, also called tooth decay or caries, are caused by a combination of factors, including bacteria in your mouth, frequent snacking, sipping sugary drinks and not cleaning your teeth well.

Answer 2

Answer:

when we eat a sugary substance,the bacteria in our mouth produces more acid to digest it.

So,tooth becomes decay due to more accumulation of acid in our mouth.The acids in plaque dissolve the enamel, creating holes called cavities...........

hope it helps