Well I'd say true because fluorine helps build the outer shell of the teeth. It's basically scrubbing something like car polish. It helps build up protection for the teeth.
Yes, Living things need carbon the most in order to live, grow, and reproduce.
<span>Martin was certain that his chin was too big and was misshapen. he was very anxious in public and tried to work at home whenever possible. his condition
could best be diagnosed as body dysmorphic disorder.</span>
The 3 ways that you can ensure your message is clear and not misunderstood;
Know your reader.
Keep it on point and focussed. Ask your question up front.
Don't use acronyms.
