The value of goods and services produced within a country in a year is its A. total national product. B. yearly income. C. annual export. D. gross domestic product. Question 21 (2 points) Most people in South America make a living in A. manufacturing. B. investments. C. service or tourism industries. D. agriculture or natural resources.

Question 22 (2 points) A local form of a language used in a particular place by a certain group is A. a primary language. B. a second language. C. a dialect. D. culture.

Question 23 (2 points) Rivers and lakes in Northern Mexico are small. True False