The mayan civilization had begun to collapse by due to frequent warfare, overpopulation, over farming and exhausted soil, and peasant revolts because of harsh taxation.
a.) 100 ad
b.) 300 ad
c.) 500 ad
d.) 1500 ad

For each of the following examples of data, determine which scale of measurement is used. a) the number of miles joggers run per week. b) the starting salaries of graduates of mba programs c) the months in which a firm's employees choose to take their vacations. d) the final letter grades received by students in a math course.

Why is the netherlands vulnerable to changes in climate? a. the netherlands is against nuclear power. b. forests in the netherlands have been destroyed by acid rain. c. the netherlands wrote the kyoto protocols. d. the netherlands is low-lying country, and rising sea levels may cause flooding.

Which of the following best summarizes the idea represented by this graph?