How was the pony express ables to more little across the country so quickly?

20 points the two basic principles of economics are (choose two) question 2 options: a. the wants of society and individuals are limited. b. the wants of society and individuals are unlimited. c. the resources of society are limited. d. the resources of society are unlimited.

Dr. robbins wants to know if there are different opinions regarding the value of public school education between native americans who have at least one relative who attended indian boarding school and native americans who have no family experience with indian boarding school. dr. robbins contacts 35 native american participants in each group. he wants each group to include younger as well as older adults, and a mix of male and female participants. he asks each person to complete a survey about their attitudes toward public education. the design of this study is:

Surfaces of paintings—such as paper, canvas, and pottery—are referred to technically as