Answer:
At least 400 micrograms (mcg) of folic acid daily
Explanation:
Taking folic acid helps prevent neural tube defects.
Treating a city's water supply to remove any bacteria and impurities as clean and hygenic water supplies benefits the public/society.
Answer:
Either an alcohol or drug use problem or a mental health issue may come first. If you have a mental health issue, you may use alcohol or drugs to try to feel better. Or a substance use problem may lead to mental health symptoms such as depression, anxiety, or rage. For some individuals a substance use problem and mental health issue start at the same time, triggered by the same factor; for others they start separately.
Explanation:
They will start seperatly
The mastery hypothesis: the mere fact that they are exercising makes patients feel like they have achieved something, cheering them up much as learning a new hobby or achieving a certain goal might cheer them up.
That sounds like B to me.
