A dictionary gives definitions
Answer:
C. Phonetics
Explanation:
The sounds (pronunciation) of the vowels have changed considerably in the last 200 years.
Sentence 3 expresses the claim of pediatricians who have children take better care of patients.
Explanation:
an atom is neutral where is an ion is either negatively or positively charged
an an atom cannot react with another atom to form a compound but an ion can react with an ion to form a compound
hope that helps