Depending on who you are writing to, then you change your voice in the article.
ex:
to a friend: hey man
to a teacher: Hello, Mr./Mrs./Ms. _____
et.al
8 to 12 cups of fluid a day
Opioids (such as OxyContin and Vicodin), central nervous system depressants (such as Xanax and Valium), and stimulants (such as Concerta and Adderall) are the most commonly abused prescription drugs.
Answer:
Dark leafy greens such as Kale are an excellent source of folate.
Folate is a B vitamin and it helps make DNA and RNA, produce red blood cells and is important for healthy cell growth and function. Adequate folate intake is extremely important during periods of growth such as pregnancy, infancy, and adolescence.
