How long did it take Halley to complete his map of the stars?

What is it called when countries build lots of weapons to store and them in case of a war?

Personal finance skills have the most significant impact on an individual’s

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.