Answer:
WOULD HAVE HELPED IF I HAVE STUDIED THIS TOPIC I AM EXTREMELY SORRY
Explanation:
Answer:
Once tartar has formed, only a dental professional will be able to remove it from your teeth. So, visit your dentist every 6 months to remove any plaque and tartar that might have formed and to prevent further problems.
Explanation:
Answer:
nitrogen can be changed into macromolecules like proteins and nucleic acids (DNA and RNA)
Explanation:
