Todd has conditioned his dog to salivate at the sound of a bell. when it begins to salivate when it hears other similar sounds, what has happened?

Laws that cover individuals who are injured by a product

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:

Which phrase in the preamble of the constitution means the government should provide peace and order in society.