The sun's radiation into the human body is blocked by _______________
Fill in the blank(s) with correct word
melanin
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Mao Zedong's "Great Leap Forward" was successful at improving both rural health care and literacy
Indicate whether the statement is true or false.
What makes a social network different from a social class?
A Social networks are mapped onto larger social groups. B Social networks are used to delineate people based on economic factors. C Social network systems are based on division and inequality. D Social networks are based on interpersonal interaction. E Social networks tend to have more internal linguistic variation.
Every person may be described as belonging to several subcultural categories simultaneously
Indicate whether the statement is true or false
Biological races have been scientifically discredited not just among humans but also among all living species.
Answer the following statement true (T) or false (F)