Life style, environment toxins, and Gene mutations
Answer: Their relationships may be angry and unpredictable, and they are likely to have few long-term friendships. They may be aloof in personal relationships and appear lonely.
Explanation:
I believe it is option D Sympathetic Nervous System.
Answer:
The word demography comes from two ancient Greek words, demos, meaning “the people,” and graphy, meaning “writing about or recording something” — so literally demography means “writing about the people.”
