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Which of the following was an effect of the growth of the service industry in the late 1800s?

In e. c. tolman's experiment, some rats were trained to run through mazes for standard food goals, while other rats were allowed to explore the mazes for 10 days without food goals or other rewards. later, when food rewards were placed in a box at the far end of the maze, the previously unrewarded rats reached the food box as quickly as the rewarded rats after only one or two trials. this experiment demonstrated that the rats had the ability to form of their surroundings.

Which of the following principles is not part of the constitution? a. confederalism b. checks and balances c. separation of powers d. federalism reset

How is the vice president of the united states selected? a. by a vote in the house b. appointed by the president c. elected with the president d. elected by a vote in the senate