If a decaying baby teeth is untreated properly without an expert's care, it may lead to permanent and serious problems in the developing permanent teeth. Which why it is advisable for parent to bring their children to their family dentist for regular check-ups to diagnose any present problems in the teeth and may be fixed right away.
u get a mechanical pencil
I can only assume it’s showing you a graph of a reaction with and without a catalyst. So the dotted line would be without the catalyst.
