18. Choose the best answer.
The meaning of demographics is _.
the study of the natural features of the earth's surface, including land formation, climate, vegetation, animal life, soil, and water
the study of the patterns and processes that affect human interaction with the environment of earth
the way of life
the set of customs, beliefs, traditions, habits, knowledge, language, and arts of a group of people
the study of the characteristics of population and population segments
O
O