Summarize and discuss the importance of robert rescorla's work with rats' responses to tones and shocks. relate this to the idea of a variable-ratio schedule of reinforcement and explain why this schedule is the best to prevent extinction

Which statement below best explains the main goal of manifest destiny during the 1800's? a to create an alliance between the united state and the mexican empire b to expand america's borders across the entire north american continent c to remove native americans from the united states' territory completely d to move settlers north of the great lakes to claim land from great britain

Paris, london, new york, and tokyo are all significant because

Which statements describe resources? the use of nonrenewable resources has decreased in recent history. resources are unevenly distributed throughout the world. resource availability is one of the factors people use when deciding where they will live. renewable resources have little value for people. more developed countries (mdcs) use most of the world's resources. the largest use of the world's resources is energy.